Seasonal variation in cotton yields in the Sudan Gezira and soil fertility
Jewitt, T.N.
Seasonal variation in cotton yields in the Sudan Gezira and soil fertility - Khartoum 1953 - 343-347 p. - No. 47; Sudan Government, Min .
Seasonal variation in cotton yields in the Sudan Gezira and soil fertility - Khartoum 1953 - 343-347 p. - No. 47; Sudan Government, Min .