Proceedings of General Meetings of the Working Group on granivorous birds Intecol held in the Ottawa, Canada, June 28, 1986 and Syracuse, New York, USA, August 13, 1986..Szerkeszt?k: J. Pinowski; J. D. Summers-Smith..ISBN: 83-01-08460-X..Szakjel: 598.2 G61..Angol nyelv?