Mwangi, H, et al. Beginning Agriculture Grade 4 H. Mwangi, D. Nyoro, V. Makundu, D. Onywera, M. Mbugua and L. Achitsa - 1st ed. - Nairobi ; Moran (EA) Publishers , 2019 . - 102 p. ; Illustration , 17 cm. ISBN: 978-9966-63-206-7 Dewey Class. No.: 630