00608nam a2200169Ia 4500 CTU_138551 210402s9999 xx 000 0 und d 631.4 V567 Vertisold and rice soils of the tropics Managing soil resources to meet the challenges to mankind New Delhi International Congress of Soil Science 1982 Contents: Vertisols; soil management for rice production in the tropics; management of upland rice soils. Tuyến Trung tâm Học liệu Trường Đại học Cần Thơ