共 14 条
[1]
AGEE DE, 1982, WYOMING AGR EXT SERV, V619
[2]
DODDS DL, 1974, R584 N DAK STAT U CO
[3]
HEADY EO, 1954, J FARM EC, V36, P507
[4]
JACOBS JJ, 1979, RJ141 WYOM COL AGR E, P171
[5]
KAIL RM, 1972, RJ63 WYOM AGR EXP ST
[6]
LEWIS RULON D., 1957, AGRON JOUR, V49, P332
[7]
LUDWICK AE, 1979, RJ141 WYOM COL AGR E, P77
[8]
SEAMANDS WJ, 1979, RJ141 WYOM COL AGR E, P101
[9]
SEAMANDS WJ, 1971, WYOMING AGR EXP STN, V545
[10]
SIMS D, 1979, RJ141 WYOM COL AGR E, P7