Boll, Carl R. Executive jobs unlimited / by Carl R. Boll. - Updated ed. - New York : Macmillan, c1979. - xix, 197 p. ; 22 cm. ISBN: 002512790X LCCN: 79022953 LC Class. No.: HF5383 .B55 1979 / .B55 1979 Dewey Class. No.: 650/.14/024658