Engineering problems manual / by Forest C. Dana and Elmer H. Willmarth. Dana, Forest Charles. 1886- Willmarth, Elmer Humphrey, 1874- joint author. Engineering Problems, exercises, etc. 620.2 DAT "Books for further reading on how to study": p. 22. New York [etc.] : McGraw-Hill Book Company, inc., c1927. c1927. 1927 Text xviii, 187 p. : eng