共 27 条
[1]
*DOM AP OBS VICT, 1939, PUB DOM AP OBS VICTO, V7, P205
[2]
KING WF, 1914, PUB DOM OBS OTTAWA, V1, P327
[3]
*LICK OBS, 1915, LICK OBS B, V8, P156
[4]
*LICK OBS, 1936, LICK OBS B, V18, P1
[5]
*O SRUV OBS, 1934, O STRUV OBS, V57, P265
[6]
SEYFERT, 1941, AP J, V93, P463
[8]
STRAND KA, 1937, LEIDEN ANN 2, V18
[9]
1920, HARVARD ANN, V84, P142
[10]
1937, HARVARD ANN, V105, P511