1. Rice agronomy (cultural techniques): A Review;Cheong,1977
2. Zero tillage for rice on vertisols;Croon;World Crops Livest.,1978
3. Zero tillage for rice on vertisols;Croon;World Crops Livest.,1978
4. Principles and Practices of Rice Production;De Datta,1981
5. Land preparation for rice soils;De Datta,1978