Whitfield, Edwin A. Guide to careers through vocational training [by] Edwin A. Whitfield [and] Richard Hoover. - [1st ed.] - San Diego, Calif. R. R. Knapp [1968] - viii, 312 p. 24 cm. LCCN: 68015874 Subjects--Topical Terms: Job descriptions Subjects--Geographic Terms: United States--Occupations. LC Class. No.: HF5382.5.U5 / W5 Dewey Class. No.: 331.702/0973