共 6 条
[2]
MEYER L, 1943, A PFLANZENERNAEHR DU, V29, P119
[3]
Ponomareva S.I., 1948, REPORT ACAD SCI USSR, V61, P505
[4]
SATCHELL JE, 1967, SOIL BIOLOGY, P273
[5]
SCOTT DRM, 1955, 62 YAL SCH FOR B
[6]
1960, 76 U WISC AGR EXP ST