Galapon, C. R. (1986). Impact of fertilizer usage on agricultural land use patterns and employment. Bureau of Agricultural Economics.
Chicago Style aipamenaGalapon, Catherine R. Impact of Fertilizer Usage on Agricultural Land Use Patterns and Employment. Quezon City: Bureau of Agricultural Economics, 1986.
MLA aipamenaGalapon, Catherine R. Impact of Fertilizer Usage on Agricultural Land Use Patterns and Employment. Bureau of Agricultural Economics, 1986.
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