Toward constructivist research in environmental education A Robertson The Journal of Environmental Education 25 (2), 21-31, 1994 | 156 | 1994 |
Can bird atlas data be used to estimate population size? A case study using Namibian endemics A Robertson, RE Simmons, AM Jarvis, CJ Brown Biological Conservation 71 (1), 87-95, 1995 | 105 | 1995 |
The feeding ecology of Cape vultures Gyps coprotheres in a stock-farming area AS Robertson, AF Boshoff Biological Conservation 35 (1), 63-86, 1986 | 49 | 1986 |
A radio-tracking study of an adult Cape griffon vuhure Gyps coprotheres in the South-Western, Cape province PM Boshoff, AF*, Robertson, AS** & Norton South African Journal of Wildlife Research-24-month delayed open access 14 …, 1984 | 39 | 1984 |
Copulations throughout breeding in a colonial Accipitrid vulture A Robertson Condor, 535-539, 1986 | 34 | 1986 |
Observations on the post-fledging dependence period of Cape Vultures AS Robertson Ostrich 56 (1-3), 58-66, 1985 | 33 | 1985 |
Eliciting students' understandings: Necessary steps in environmental education A Robertson Australian Journal of Environmental Education 9, 95-114, 1993 | 32 | 1993 |
Lifting a corner of the research rug: a case for meta-interviews in qualitative studies A Clarke, A Robertson Teaching and Teacher Education 17 (7), 773-782, 2001 | 30 | 2001 |
Notes on the breeding cycle of Cape Vultures (Gyps coprotheres) AS Robertson Journal of Raptor Research 20 (2), 1, 1986 | 20 | 1986 |
Aspects of the population dynamics of Cape Vultures in the Cape Province AS Robertson Ostrich 55 (4), 196-206, 1984 | 18 | 1984 |
The feeding ecology and breeding biology of a Cape vulture colony in the Southwestern Cape Province. AS Robertson | 13 | 1983 |
Prey of giant eagle owls in the de Hoop nature reserve, Cape province, and some observations on hunting strategy G Avery, AS Robertson, NG Palmer, AJ Prins Ostrich 56 (1-3), 117-122, 1985 | 12 | 1985 |
A conservation plan for the Cape Vulture colony at Potberg, De Hoop Nature Reserve, south-western Cape Province AF Boshoff, AS Robertson Bontebok 4, 25-31, 1985 | 11 | 1985 |
Known-age Cape Vultures breeding in the wild A Robertson Ostrich 54 (3), 179-179, 1983 | 11 | 1983 |
Engaging Students Eco-Philosophies in Research and Teaching A Robertson Canadian Journal of Environmental Education (CJEE), 171-188, 1998 | 10 | 1998 |
Aspects of the biology of the Forest Buzzard NG Palmer, PM Norton, AS Robertson Ostrich 56 (1-3), 67-73, 1985 | 10 | 1985 |
Attacks by Black Eagles on vultures PJ Mundy, AS Robertson, J Komen, TG O'Connor Journal of Raptor Research 20 (2), 2, 1986 | 8 | 1986 |
Student-teachers’ conceptualisations of environment and human-nature relationships AS Robertson University of British Columbia, 1994 | 7 | 1994 |
Post-nestling mortality in Cape Vultures AF Boshoff, AS Robertson Ostrich 56 (1-3), 204-207, 1985 | 4 | 1985 |
A discussion of the factors regulating breeding in the Cape Vulture Gyps corprotheres CJ Vernon, AS Robertson Vulture News 7, 10-13, 1982 | 4 | 1982 |