共 17 条
[11]
SAMPSON AW, 1944, CALIF AGR EXPT STA B, V685
[12]
STREETS RB, 1938, ARIZ AGR EXPT STA TE, V74, P469
[13]
THORNBER JJ, 1907, 18TH AR AGR EXPT STA
[14]
THORNBER JJ, 1910, AAES B, V65, P246
[15]
UPSON A, 1937, OCCURRENCE SHRUBS RA
[16]
WOOTON EO, 1916, US DEP AGR B, V367
[17]
YOUNGS FO, 1936, US DEP AGR BUR CHEM, V19