TY - BOOK AU - Chandra Mal, Bimal TI - Introduction to soil and water conservation engineering: Surveying, irrigation, drainage and soil conservation SN - 9788127267445 U1 - 631.45 PY - 1994/// CY - Ludhiana PB - Kalyani publishers KW - Measurement of distance and areas KW - Compass surveying KW - Equipments and accessories KW - Control of water erosion ER -