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Down to Earth Published by: Midland, Dow Chemical U.S.A., Agricultural Products Department (United States of America) Subject: Chemistry Agriculture Language: English Published: 1944 Available at 64 Universities. | |||
Scientific American Published by: Nature Publishing Group (United States of America) Subject: Sciences: Comprehensive Works Language: English ISSN: 0036-8733, 1946-7087 Available at 116 Universities. | |||
National geographic Published by: National Geographic Society (United States of America) Subject: Geography Children And Youth Environmental Studies Language: English Published: 1888 ISSN: 0027-9358 Available at 118 Universities. |