Nguyen Tri Khiem. (1977). An economic analysis of pasture improvement and grazing practices of beef cattle production in the Philippines [microform]. Photoduplication Service. University of the Philippines Library.

Nguyen Tri Khiem. An Economic Analysis of Pasture Improvement and Grazing Practices of Beef Cattle Production in the Philippines [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.

Nguyen Tri Khiem. An Economic Analysis of Pasture Improvement and Grazing Practices of Beef Cattle Production in the Philippines [microform]. Photoduplication Service. University of the Philippines Library, 1977.