APA

Pretty J. N., . (1988). Rapid agroecosystem zoning of alpuri sub-division, swat district, north west frontier province pakistan. Mingora, Swat: Malakand Fruit and Vegetable Development Project.

Chicago

Pretty Jules N, . 1988. Rapid agroecosystem zoning of alpuri sub-division, swat district, north west frontier province pakistan. Mingora, Swat: Malakand Fruit and Vegetable Development Project.

Harvard

Pretty J. N., . (1988). Rapid agroecosystem zoning of alpuri sub-division, swat district, north west frontier province pakistan. Mingora, Swat: Malakand Fruit and Vegetable Development Project.

MLA

Pretty Jules N, . Rapid agroecosystem zoning of alpuri sub-division, swat district, north west frontier province pakistan. Mingora, Swat: Malakand Fruit and Vegetable Development Project. 1988.