Philippines Bureau of Soils. (1961). 25 years of soils work in the Philippines. Associated Promotions.
Chicago Style (17th ed.) CitationPhilippines Bureau of Soils. 25 Years of Soils Work in the Philippines. Quezon City: Associated Promotions, 1961.
MLA (9th ed.) CitationPhilippines Bureau of Soils. 25 Years of Soils Work in the Philippines. Associated Promotions, 1961.
Warning: These citations may not always be 100% accurate.