'Thattumaru' and 'Kattimaru' systems of rotation of cultivation of paddy land : A case study in the village of Unduruwa Halmillawewa, Anuradhapura District, Sri Lanka, 1974
P. Ganewatte
- Colombo A.R.T.I. 1974
- 11 p.
- ARTI Occasional Publication Series, No. 6 .