共 20 条
[1]
[Anonymous], 1963, PRINCIPLES NUMERICAL
[2]
ARNEMAN HF, 1963, 278 U MIN AGR EXT SE
[3]
BAKER DG, 1967, 254 U MINN AGR EXP S
[4]
BAKER DG, 1965, 248 U MINN AGR EXP S
[5]
BIDWELL O. W., 1964, SOIL SCI, V97, P58, DOI 10.1097/00010694-196401000-00009
[6]
BUNTLEY G. J., 1965, SOIL SCI SOC AMER PROC, V29, P579
[9]
HOLE FRANCIS D., 1960, SOIL SCI SOC AMER PROC, V24, P309
[10]
KENDRICK W. B., 1964, Canadian Journal of Botany, V42, P65, DOI 10.1139/b64-007