Thacker, E. Winifred. Postural drainage and respiratory control / E. Winifred Thacker. - 3rd ed. - London : Lloyde-Luke, 1971. Chicago: Yearbook Medical Publishers, 1973. - viii, 70 p. : ill.; 19 cm. ISBN: 0815122519 Subjects--Topical Terms: Respiratory Tract Diseases.-------- National Library of Medicine Call No.: WF 140 / T325p 1971