共 6 条
[3]
CHEPIL W. S., 1941, SCI AGRIC [OTTAWA], V21, P479
[4]
CHEPIL W. S., 1939, SCI AGRIC [OTTAWA], V19, P249
[5]
Durst CS, 1936, Q J ROY METEOR SOC, V62, P116
[6]
SCHMIDT W, 1935, LONDON AERONAUT SOC, V39, P355