共 15 条
[1]
[Anonymous], 1911, REPORT AGR SOILS KEN
[2]
BANE WA, 1934, B MINIST AGR, V80
[3]
BRADEBIRKS SG, 1930, J S E AGR COLL WYE, V27, P252
[4]
COLE LW, 1932, J S E AGR COLL WYE, V30, P141
[5]
De Bruyn H.L.G., 1933, TIJDSCHR PLANTENZIEK, V39, P281
[6]
FURNEAUX BSD, 1932, J S E AGR COLL WYE, V30, P123
[7]
Gilbert C.J., 1933, ARCH CANTIANA, V45, P246
[8]
GRIEVE BJ, 1934, ANN APPL BIOL, V21, P636
[10]
LEE LINWOOD L., 1930, JOUR MIN AGRIC [GT BRITAIN], V37, P653