共 17 条
[1]
LOSH, 1931, PUB OBS U MICHIGAN, V4, P3
[2]
LOSH, 1932, PUB OBS U MICHIGAN, V4, P200
[3]
MCLAUGHLIN, 1932, PUB OBS U MICHIGAN, V4, P181
[4]
*OBS U MICH, 1932, PUB OBS U MICH, V4, P175
[5]
*OBS U MICH, 1931, PUB OBS U MICH, V4, P44
[6]
*OBS U MICH, 1932, PUB OBS U MICH, V4, P182
[7]
*VASS OBS, 1934, PUB VASSAR OBS, V4, P29
[8]
1936, AP J, V83, P495
[9]
1935, MN, V95, P520
[10]
1925, POP ASTR, V33, P596