共 11 条
[1]
ATWOOD H, 1923, W VIRGINIA AGR EXP S, V182
[2]
BENJAMIN EW, 1920, NEW YORK AGR EXP STA, V31
[3]
FUNK EM, 1934, MISSOURI AGR EXP STA, V341
[4]
GODFREY A. B., 1936, POULTRY SCI, V15, P294, DOI 10.3382/ps.0150294
[5]
GRAHAM JC, 1931, POULTRY SCI, V10, P405
[6]
Halbersleben D.L., 1922, POULTRY SCI, V1, P143, DOI [10.3382/ps.0010143, DOI 10.3382/PS.0010143]
[7]
HAYS F.A, 1926, POULTRY SCI, V6, P196
[8]
Jull MA, 1925, J AGRIC RES, V31, P0223
[9]
Jull MA, 1925, J AGRIC RES, V31, P0685
[10]
MUNRO S. S., 1940, SCI AGRIC [OTTAWA], V20, P586