共 13 条
- [2] BROWN EM, 1939, 299 MO AGR EXP STA R
- [6] HOSTERMAN W. H., 1938, JOUR AMER SOC AGRON, V30, P564
- [7] KANE EA, 1959, J DAIRY SCI, V42, P936
- [8] MARTZ FA, 1960, J DAIRY SCI, V43, P868
- [9] MELLIN TN, 1961, THESIS U MAINE
- [10] NEWLANDER JA, 1943, 7 VT AGR EXP STA PAM