共 6 条
[1]
AXELSON JAN, 1961, REPT INST FRESHWATER RES DROTTNINGHOLM, V42, P169
[3]
ELGMORK K., 1959, FOLIA LIMNOL SCAND, V11, P1
[4]
LINDSTROM THOROLF, 1958, REPT INST FRESHWATER RES DROTTNINGHOLM, V39, P99
[5]
LINDSTROM THOROLF, 1952, REPT INST FRESHWATER RES DROTTNINGHOLM, V33, P70