Leatherdale, D.2007-11-131975-04-012007-11-131975http://hdl.handle.net/10625/18062Meeting: Workshop / Seminar on Regional Cooperation in Agricultural Information, 3-12 Mar. 1975, Los Baños, PHText1 digital file (p. 205-212)application/pdfenCLASSIFICATIONAGRISBook Chapter