Effective dental assisting / Shirley Pratt Schwarzrock, James R. Jensen. Schwarzrock, Shirley Pratt, 1914- Jensen, James R., 1922- joint author. Dental assistants. RK60.5 .S36 1978 617.63 23 SCE Includes bibliographies and index. Dubuque, Iowa : W. C. Brown Co., c1978. c1978. 1978 Text xviii, 790 p. : eng