Document 225
Blackwell, F., T.A.W. Wilmot and E.W. Houghton. 1974. Analysis and classification of bird flight and echo data obtained by radar. Proceedings of the Bird Strike Committee Europe. BSCE9-4.14. Frankfurt, Germany. 42 pages.
Blackwell, F., T.A.W. Wilmot and E.W. Houghton. 1974. Analysis and classification of bird flight and echo data obtained by radar. Proceedings of the Bird Strike Committee Europe. BSCE9-4.14. Frankfurt, Germany. 42 pages.
