Science Digest Magazine Vintage Back Issue From November 1971 Hovercraft Cover

Science Digest Magazine Vintage Back Issue February 1971 Galapagos Animals Cover

Science Digest Magazine Vintage Back Issue From September 1971 Lightning Cover

Science Digest Magazine Vintage Issue August 1971 Biological Superiority Cover

Science Digest Magazine Vintage Back Issue From June 1971 African Round-Up Cover

Science Digest Magazine Vintage Back Issue May 1971 Witch Lore In Salem Cover

Science Digest Magazine Vintage Issue July 1971 Exploring Spanish Caves On Cover

Science Digest Magazine / January 1971 / Who's beautiful and why / elephant twin