共 16 条
[1]
HOFFMAN I, 1968, J ASSOC OFF ANA CHEM, V51, P1039
[3]
JOHNSON CM, 1959, 766 CAL AGR EXP STA
[5]
MALISSA H, 1955, MIKROCHIM ACTA, V1, P187
[6]
MARTIN PJ, 1973, CAN J ANIM SCI, V53, P765
[8]
PARKER HE, 1963, ATOMIC ABSORPTION NE, V2, P23
[9]
PARKS PF, 1963, J ASSOC OFF AGR CHEM, V46, P836
[10]
WALKER OJ, 1971, CAN J SOIL SCI, V51, P506