Some Indigenous Technology Knowledge and practices for watershed management in sri lanka
Some Indigenous Technology Knowledge and practices for watershed management in sri lanka - Tài liệu nông nghiệp 48
Some Indigenous Technology Knowledge and practices for watershed management in sri lanka / Prem N. Sharma Sri Lanka : University of peradeniya, 1999 36 p. ; 27 cm Kinh nghiệm Tiêu đề đề mục: Quản lý nguồn nước
