共 13 条
[1]
BATES JP, 1958, J DAIRY SCI, V41, P723
[3]
Briggs HM, 1943, J AGRIC RES, V67, P0359
[4]
BRODY S, 1945, BIOENERGETICS GROWTH, P377
[5]
DAVIS RF, 1955, CORNELL U AGR EXP ST, V914
[6]
DUNCAN B, 1953, 6 VIRG AGR EXPT STA
[8]
POTT E, 1909, HDB TIERISCHEN ERNAH, V3, P627
[9]
RICHARDSON D, 1958, 358 KANS AGR EXPT ST, P65
[10]
SNEDECOR GW, 1956, STATISTICAL METHODS, P311