00818nam a2200265Ia 4500 1654 1654 001433 OCoLC 20210804133922.0 850530s1985 xxua b i000 0 eng d 0821305662 (OCoLC)12189573 und dlc dlc dlc xxu S494.5.S95 S56 1985 630.72 SIMMONDS Simmonds, Norman W., 1914- Farming Systems Research : A Review / Norman W. Simmonds. Washington, D.C., U.S.A : World Bank, c1985. xii, 97 p. : ill. ; 28 cm. World Bank technical paper, 0253-7494 ; no. 43. Agricultural systems Research. Agriculture Research On-farm. Agricultural systems Tropics. lcc BOOK 0 0 lcc 0 0 001 001 2014-07-15 001433 0 S494.5.S95 . S56 1985 2014-07-15 00:00:00 1 2014-07-15 BOOK