Proceedings of a symposium on tropical agriculture research, Tsukuba, October 19-26, 1981. 

 - Tokyo :  Japanese Society of Soil Science and Plant Nutrition,  1982 
 - iii, 417 p. :  ill. 
 - Tropical agriculture research series ;  no. 15 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils.