Okullo, Moses. The impact of brick making on the composition and abundance of trees and shrubs in Ayira Parish, Barr Sub-county, Lira District / by Mo ses Okullo. - Kampala, 2001. - ix, 53 p. : ill. ; 30 cm. Dissertation (B.Sc. Forestry ) - Makerere University, 2001 Includes bibliographical references (p. 33-35) Subjects--Topical Terms: Brick making-- Uganda-- Lira District.