Technical bulletin of the Tropical Agriculture Research Center vol./no. 24
Characteristics and genesis of volcanic ash soils in the Philippines
Hiroo Otsuka, Aurelio A. BRIONESS, Nonilona P. DAQUIADO, Fernando A. EVANGELIO, Technical bulletin of the Tropical Agriculture Research Center. 24 , 1-127 (1988-01-01)
techtarc24-_1-127.pdf18.02 MB