TY - BK AU - Pingali,P.L. TI - Institutional and environmental constraints to agricultural intensification T2 - IRRI Agricultural Economics Department Papers PY - 1989/// CY - Manila (Philippines) PB - IRRI, KW - Africa KW - Asia KW - Cropping systems KW - AGROVOC KW - Intensive farming KW - Markets KW - Production factors KW - Productivity KW - Soil deterioration KW - Farming systems ER -