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anthony j erskine
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Atlas of breeding birds of the Maritime Provinces
Anthony J. Erskine · Nimbus Pub.
270 sayfa · 1992
Bird populations / Birds / Geographical distribution / Maps / Birds, canada
Birds in boreal Canada
Anthony J. Erskine · Minister of Supply and Services : Available from Printing and Publishing, Supply and Services Canada
73 sayfa · 1977
Birds / Forest birds
Waterfowl breeding population surveys, Atlantic Provinces
Anthony J. Erskine · Environment Canada, Canadian Wildlife Service
82 sayfa · 1987
Waterfowl / Bird surveys / Bird populations / Birds