共 9 条
[1]
CLEMENTS FE, 1920, 353 CARN I WASH PUBL
[4]
SHANTZ HL, 1938, SOILS MEN, P835
[5]
SHANTZ HL, 1940, 713 US DEP AGR TECH
[6]
SNEDECOR GW, 1965, STATISTICAL METHODS
[7]
Stewart G, 1940, J AGRIC RES, V60, P0289
[8]
STRICKLER GS, 1956, THESIS U NEVADA
[9]
Weaver JE., 1938, PLANT ECOL, V2