1. The rice cultures
2. World Rice Statistics;Palacpac,1982
3. Food Agr. Organ. U.N. FAO, Rept. 24th Session Intergovt. Group on Rice to Common Commodity Problems CCP 8114, 1978 p. 3.
4. Rice: Chemistry and Technology;Adair,1972
5. Rice in Asia;Shimoda,1975