Newton, Harold William. The face of the sun H. W. Newton. - Harmondsworth, Middlesex Baltimore Penguin Books 1958. - 208 p. illus. - Pelican books A422 . Includes index. Bibliography : p. 205. LCCN: 58004447 /L/r902 Subjects--Topical Terms: Sunspots. Subjects--Geographic Terms: Sun LC Class. No.: QB521 / .N4 Dewey Class. No.: 523.7