Schumann, Charles Henry, 1893- [from old catalog] Technical drafting : a text and reference book on graphics / by Charles H. Schumann... - xiv, 793 pages : including front., illustrations, tables, diagrams. ; 24 cm. LCCN: 40035326 Subjects--Topical Terms: Mechanical drawing LC Class. No.: T353 / .S355 Dewey Class. No.: 604.2