Document 1798
Yakobi, V.E. 1971. Bird behaviour and man-made objects. National Research Council Associate Committee on Bird Hazards to Aircraft Fieldnote 57. November 1971. 31 pages.
Yakobi, V.E. 1971. Bird behaviour and man-made objects. National Research Council Associate Committee on Bird Hazards to Aircraft Fieldnote 57. November 1971. 31 pages.
