| The Certificate of Authorization is Not a Right but a Privilege           | 
                                                                                        Annable, D.           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.4           | 
                                                                                        1991           | 
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                                                                                        | Am I My Brother's Keeper? Implications of the Lang Michener Affair           | 
                                                                                        McCaffery, M.           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.1           | 
                                                                                        1991           | 
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                                                                                        | Standards for Surveys, Fifth Edition           | 
                                                                                        A.O.L.S.           | 
                                                                                        The Association of Ontario Land Surveyors           | 
                                                                                        1991           | 
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                                                                                        | Augustus Jones           | 
                                                                                        Report of Committees           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.2           | 
                                                                                        1991           | 
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                                                                                        | Reminiscences of an Old Surveyor           | 
                                                                                        Unwin, C.           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.1           | 
                                                                                        1991           | 
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                                                                                        | Boundary Monuments           | 
                                                                                        Deville, E.           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.2           | 
                                                                                        1991           | 
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                                                                                        | Samuel Holland And John Collins: Pioneer Canadian Land Surveyors           | 
                                                                                        Davis, A.R.           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.1           | 
                                                                                        1991           | 
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                                                                                        | Loss and Error Prevention in the Survey and Retracement of Natural Boundaries in Ontario           | 
                                                                                        de Rijcke, I.; Lambden, D.W.           | 
                                                                                        The Association of Ontario Land Surveyors           | 
                                                                                        1991           | 
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                                                                                        | O.L.S. #1, Henry Strange           | 
                                                                                        Report of Committees           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.2           | 
                                                                                        1991           | 
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                                                                                        | The Surveyor, Past and Present, and the Future Prospects for Him In Northern Ontario           | 
                                                                                        Whitson, J.F.           | 
                                                                                        AOLS: Ontario Professional Surveyor; v.34, no.1           | 
                                                                                        1991           | 
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