Willis, Arthur James. Elements of quantity surveying/ by Arthur J. Willis and Christopher J. Willis. - 6th ed. (metric). - London, Crosby Lockwood, c1969. - xiv, 254 p. 1 fold. plate, illus., forms.figs. ; 25 cm. Includes Index English LCCN: 77402955 Nat. Bib. No.: B69-06282 Subjects--Topical Terms: Building--Estimates.Quantity surveying. LC Class. No.: TH435 / .W68 1969 Dewey Class. No.: 692.5/WIE