共 11 条
[1]
BENNETT HH, 1934, USDA YB, P322
[3]
ELWELL HM, 1939, SOIL CONSERV, V5, P17
[6]
NEAL JH, 1938, AGR EXP STATION RESE, V280, P47
[7]
PETERSEN JOHS. BOYE, 1935, DANSK BOT ARKIV, V8, P1
[9]
TREUB M, 1888, ANN J BOT BUITENZORG, V7, P221
[10]
WINTERS NE, 1934, SW C SOIL WATER CONS, V5, P35