@BOOK {COUPER:1995c,
title = {No-till farming in the humid and subhumid tropics of Africa: IITA research guide, No. 3},
author = {Couper, D. C. },
series = {IITA research guide, No. 3},
year = {1995},
month = {July},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
note = {26p.},
}