Comparative input, output and financial data from cotton, palay, burley tobacco, virginia tobacco and native tobacco, Ilocos region, Tarlac, Nueva Ecija and Cagayan, 1980 L.S. Ang ... [et al.]. - Ang, L.S. (Quezon City Special Studies Division, Ministry of Agriculture, 1980)
Mimeographed.
Keywords: Field crops -- Economic aspects -- Philippines -- Ilocos region; Field crops -- Economic aspects -- Philippines -- Cagayan; Field crops -- Economic aspects -- Philippines -- Nueva Ecija; Field crops -- Economic aspects -- Philippines -- Tarlac