Schell, Erwin Haskell 1889-1965. Technique of administration : administrative proficiency in business / Erwin Haskell Schell - 2d ed. - New York : McGraw-Hill, c1951. - xii, 363 p. ; 20 cm. First ed. published in 1936 under title: Administrative proficiency in business. Includes indexes. Subjects--Topical Terms: Executive ability.Business. Dewey Class. No.: 658.409 / SCT 1951