共 23 条
[1]
*ASS OFF AGR CHEM, 1931, OFF TENT METH AN
[2]
BENNETT, 1939, SOIL CONSERVATION
[3]
BINGHAM GH, 1937, MONTANA EXTENSION B, V84, P1
[7]
Date of channel trenching (arroyo cutting) in the arid southwest
[J].
SCIENCE,
1925, 62
:338-344
[8]
COOPERRIDER CHARLES K., 1937, U S DEPT AGRIC TECH BULL, V567, P1
[9]
Emerson P, 1925, SOIL CHARACTERISTICS
[10]
FLORY E. L., 1937, Soil Conservation, V2, P193