TY - TH AU - Mustafa Usman TI - Economic impact of land degradation (Salt affected and waterlogged soils) on rice production in Pakistan's Punjab PY - 1991/// CY - Los BaƱos, Laguna (Philippines) PB - University of Philippines, KW - Economic analysis KW - AGROVOC KW - Fertilizers KW - Irrigation KW - Pakistan KW - Plant production KW - Rice KW - Salts KW - Soil deterioration KW - Waterlogging KW - Yields N1 - Thesis (Ph. D) Agricultural Economics ER -