na INLIS000000000000269 20200715093819 0010-0720000025 Basic Procedures For Agroeconomic Research International Rice Research Institute Revised Edition viii, 230 hlm. : ilus.; 22 cm Manila : International Rice Research Institute, 1991 631 631 BAS - 971-22-0007-8 BASIC PROCEDURES AGROECONOMIC RESEARCH 2211