共 10 条
[1]
BRATTON RW, 1956, 4A CORN U ROUT LAB P, P6
[3]
BROWN KI, 1968, OHIO AGR RES DEV CTR, V33, P5
[6]
LORENZ FW, 1959, 472 CAL AG EXPT STA, P4
[8]
MUNRO S. S., 1938, CANADIAN JOUR RES SECT D ZOOL SCI, V16, P281
[9]
Nestor K.E, 1968, OHIO AG EXPT STA RES, V33, P8
[10]
SNEDECOR CW, 1956, STATISTICAL METHODS