共 10 条
[3]
MOXON AL, 1941, THESIS U WISCONSIN
[4]
MOXON ALVIN L., 1941, PROC SOUTH DAKOTA ACAD SCI, V21, P34
[5]
OLSON OE, 1954, P S DAK ACAD SCI, V33, P90
[6]
OLSON OE, 1955, P S DAK ACAD SCI, V34, P42
[7]
ROBISON WL, 1921, OHIO AGR EXP STA B, V243
[8]
SNYDER WP, 1930, NEBR AGR EXP STA B, V243
[10]
WEBER AD, 1928, 138 KAN AGR EXP STA