共 9 条
[1]
Andrews F. W., 1948, Agriculture in the Sudan, being a handbook of agriculture as practised in the Anglo-Egyptian Sudan, P32
[2]
CRAIG JI, 1910, SURV DEP PAP EGYPT, V17
[3]
HURST HE, 1943, NILE BASIN, V6
[4]
LYONS HG, 1907, SURV DEP PAP EGYPT, V2
[5]
LYONS HG, 1909, SURV DEP PAP EGYPT, V14
[6]
LYONS HG, 1909, SURV DEP PAP EGYPT, V9
[7]
TOTHILL JD, 1948, AGR SUDAN
[8]
1944, SOIL CONSERVATION CO
[9]
[No title captured]