共 12 条
[1]
BLACK WH, 1934, USDA TECH B, V417
[5]
GERLAUGH P, 1951, OHIO AGR EXP STA B, V703
[6]
HUBERT F, 1955, ORE AGR EXP STA B, V549
[7]
ITTNER NR, 1954, CAL AGR EXP STA B, V745
[8]
Kempthorne O., 1952, DESIGN ANAL EXPT
[9]
KNAPP B, 1949, USDA810 CIRC