Nettai Nōgyō Kenkyū Sentā & Otsuka, H. (1988). Characteristics and genesis of volcanic ash soils in the Philippines. Tropical Agriculture Research Center, Ministry of Agriculture, Forestry and Fisheries.
Chicago Style (17th ed.) CitationNettai Nōgyō Kenkyū Sentā and Hiroo Otsuka. Characteristics and Genesis of Volcanic Ash Soils in the Philippines. Ohwashi, Tsukuba, Ibaraki 305, Japan: Tropical Agriculture Research Center, Ministry of Agriculture, Forestry and Fisheries, 1988.
MLA (9th ed.) CitationNettai Nōgyō Kenkyū Sentā and Hiroo Otsuka. Characteristics and Genesis of Volcanic Ash Soils in the Philippines. Tropical Agriculture Research Center, Ministry of Agriculture, Forestry and Fisheries, 1988.
Warning: These citations may not always be 100% accurate.