SCIENTIFIC AMERICAN, 27 Issues 1968-1977 -

New York: SCIENTIFIC AMERICAN INC 2 issues: 1968 (Jan. & Oct.); 2 issues: 1969 (March & July); 1 issue: 1970 (July); 1 issue: 1971 (Oct.); 8 issues: 1974 (Jan.,June, July, August-Dec); 7 issues: 1975 (Jan., Feb., April-May, July-August, & Oct.); 5 issues: 1976 (May-Aug. & Nov.), and 1 issue: 1977 (March). All colored covers are in VG- or better condition. Some covers are mildly soiled or foxed(?) at borders otherwise VG. Interiors of all are clean, tight, and in VG+ condition. . Wraps. Very Good-. Illus. by Photographs, Charts, Tables, Diagrams, Maps. Magazines.