London, Hoyt H., 1900- London, Hoyt H., 1900- Principles and techniques of vocational guidance [by] H. H. London. - Columbus, Ohio, C. E. Merrill Pub. Co. [1973] - The Merrill series in career programs . Includes bibliographies. ISBN: 0675089492 LCCN: 73078475 Subjects--Topical Terms: Vocational guidance. LC Class. No.: HF5381 / .L655 Dewey Class. No.: 371.4/25