Sustainable intensification in smallholder agriculture : an integrated systems research approach Edited by Ingrid Oborn, Bernard Vanlauwe, Michael Phillips , Willemien Brooijmans , Kwesi Atta-Krah. - London: Routledge, 2019. - xxx, 387 p. ISBN: 9780367227784 Subjects--Topical Terms: Sustainable agriculture Farms, Small Dewey Class. No.: 338.1 / SUS