@INBOOK {NAVASERO: 1986, title = {Tool and implement for rice farming}, author = {Navasero, N. and Bautista, R. C. and Lantin, R. M. }, year = {1986}, type = {The Wetlands and Rice in sub-Saharan Africa edited by A.S.R. Juo,and J.A. Lowe}, pages = {239--247}, }