共 17 条
[1]
ABERG B, 1947, LANTBR HOGSK ANN, V15, P1
[2]
ASLANDER A, 1931, NORDISK JORDBRUGSFOR, P1
[3]
BURSTROM H, 1945, LANTBRUKS HOGSKOL AN, V13, P1
[4]
Crafts AS, 1939, J AGRIC RES, V58, P0637
[5]
EKDAHL I, 1947, KGL LANTBR HOGSK ANN, V15, P113
[9]
LEMOIGNE M, 1946, CR HEBD ACAD SCI, V222, P1058