Science news letter : 1974 : the weekly summary of current science / Science service, inc. - Science service. - v. : illus. (incl. ports) diagrs. ; 28 x 34 cm. - Weekly ISSN: 0036-8423 LCCN: 37018541 Subjects--Topical Terms: Science--Periodicals. Subjects--Index Terms: მეცნიერება პერიოდიკა LC Class. No.: Q1 / .S76 Universal Decimal Class. No.: 05