Heard, W. E. Intermediate engineering drawing / W. E. Heard - London : Macmillan, c1975. - 95 p. : figs., ill. ; 20 x 29 cm. - Macmillan technical drawing books . English ISBN: 0333147200 : £1.50 LCCN: 76354422 Nat. Bib. No.: GB75-05645 Subjects--Topical Terms: Mechanical drawing LC Class. No.: T353 / .H4 Dewey Class. No.: 604.2/HEI