共 15 条
[3]
FRITSCH FE, 1906, NEW PHYTOL, V5, P149
[5]
MCLARTY DA, 1960, OBSERVATIONS NATURE
[6]
MCNAUGHT ME, 1964, THESIS U WISCONSIN
[7]
NEIL JH, 1964, 11 U MICH GREAT LAK, P113
[8]
OHLE W, 1953, WATER POLLUTION ABST, V28, P1
[9]
PUTNAM HD, 1960, 19581959 U MINN SCH
[10]
PUTNAM HD, 1959, 19581959 U MINN SCH