ed. by E. S. Wallis; D. E. Byth; Australian Centre for International Agricultural Research.; Thailand. Krom Wichākān Kasēt.; Mahāwitthayālai Khō̜n Kǣn.Australian Centre for International Agricultural Resaerch1987
a cooperative effort by the Department of Agriculture, Royal Thai Government and the United States Operations Mission to ThailandAgency for International Development, United States Operations Mission to Thailand1965