00401nam a2200109 a 450000100080000000500110000800800410001910000190006024500750007926001170015470000200027113301652002-11-22 1984 bl uuuu 00u1 u #d1 aGREACEN, E. L. aSoil mechanical problems associated with the agricultural use of soils aIn: INTERNATIONAL WORKSHOP ON SOILS RESEARCH IN THE TROPICS, 1984, Cnberra. Proceedings... Canberra: ACIARc19841 aRICHARDS, B. G.