Kariuki, Leah et al. New Progressive Primary English / English Activities Learners Book Grade 1. - 1st ed. - Nairobi : Oxford University Press East Africa Limited, 2018 - vi, ill. col. 121 p. 17 cm. ISBN: 9780195746761 Nat. Bib. Agency Control No.: KeNaShofco Dewey Class. No.: 400.421