@BOOK {HARTLEY:1996,
title = {Irrigation systems for research farms: IITA research guide, No. 14},
author = {Hartley, P. V. },
series = {IITA research guide, No. 14},
year = {1996},
edition = {2nd. ed},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
note = {18p.},
}