共 14 条
[2]
LEEPER GW, 1978, MANAGING HEAVY METAL
[4]
LUCAS R E, 1972, P265
[5]
Lucas Robert E., 1946, SOIL SCI SOC AMER PROC, V10, P269
[8]
MATHUR SP, 1982, AGR CANADA MONOGRAPH, V8244, P139
[9]
MATHUR SP, 1982, 12TH P INT SOIL SCI, V1, P125
[10]
MATHUR SP, 1978, CAN J SOIL SCI, V48, P125