共 27 条
[21]
SRAMEKHUSEK R, 1956, ARCH HYDROBIOL, V51, P376
[22]
UHERKOVICH G, 1961, HIDROL KOZLONY, V1, P85
[23]
WESTON RS, 1917, MASS I TECHNOL, V10
[24]
WHIPPLE GC, 1948, MICROSCOPY DRINKING
[25]
WIEBE A. H., 1927, BULL U S BUR FISHERIES, V43, P137
[26]
WINSNIEWSKI TF, 1961, W613 TECH REPT OHIO, P118
[27]
Wysocka H., 1961, Verhandlungen der Internationalen Vereinigung fuer Limnologie Stuttgart, V14, P1063