TY - BOOK AU - Paiboon Prabuddham, TI - The composition levels of selected trace elements in soils from the major rice producing regions of Thailand and South Vietnam and some factors related to the abundance of these elements PY - 1975/// CY - Ann Arbor, Mich. PB - University Microfilms International KW - Soil KW - Trace elements content KW - Rice KW - Soils N1 - Thesis (Ph.D.) - University of Illinois at Urbana - Champaign, 1975 ER -