01183nam a2200229Ia 4500 CTU_138662 210402s9999 xx 000 0 und d 15.33 631.45 I.61/1999 Integrated Nutrient Management in Farming Systems in Southeast Asia and Australia : Proceedings of an International Workshop held at the National Agricultural Research Centre, Vientinae, Laos 21-22 April, 1999 Edited by A M Whitbread, G J Blair Canberra Australian Centre for International Agricultural Research 1999 Changes in economic situation of farmers and changes in farming systems has refocused attention on ways to integrate nutrient sources. The papers contained in this publication were presented at an international workshop held at the National Agricultural Research Centre, Laos in April, 1999. Cropping systems,Crop residue management,Hệ thống quản lý nông trại Congresses,Congresses Southeast Asia,Southeast Asia Năm Trung tâm Học liệu Trường Đại học Cần Thơ