Frederick E. Giesecke, Alva Mitchell & Henry Cecil Spencer.
Technical drawing problems., 2nd ed.
R589574. Technical drawing problems. By Frederick E. Giesecke, Alva Mitchell & Henry Cecil Spencer. 2nd ed. © 12Aug47; AA59527. Hilda Gruene Giesecke & Juanita M. Spencer (W), R. Howard Mitchell (C); 1Nov74; R589574.
Hilda Gruene Giesecke & Juanita M. Spencer|W||R. Howard Mitchell|C