Freemon, Frank R. Sleep research; a critical review by Frank R. Freemon. - Springfield, Ill. Thomas [1972] - ix, 205 p. illus. 24 cm. Bibliography: p. 161-200. ISBN: 0398025401 LCCN: 72075915 Subjects--Topical Terms: Sleep--Physiological aspects.SleepResearch LC Class. No.: QP425 / .F74 Dewey Class. No.: 612/.821