Document 861
Hild, J. 1978. Large Scale Weather Situations and Influence on Bird Migration During Seasons of the Year. Proceedings of the Bird Strike Committee Europe. BSCE13-WP17. Bern, Switzerland. 18 pages.
Hild, J. 1978. Large Scale Weather Situations and Influence on Bird Migration During Seasons of the Year. Proceedings of the Bird Strike Committee Europe. BSCE13-WP17. Bern, Switzerland. 18 pages.
