Basic procedures for agroeconomic research / International Rice Research Institute - Rev. ed. - Manila : International Rice Research Institute, 1991. - viii, 230 pages : illustrations ; 23 cm Includes bibliographical references. ISBN: 9712200078 Subjects--Topical Terms: Agriculture--Economic aspects--Research--Statistical methods.Cropping systems--Economic aspects--Research LC Class. No.: HD1410.5 / B29 1991