Ex-Library; 23 oz.; 128 pages; '68 ED Pictorial HC ex library no DJ pencil mark on cover light soiling o/w nice tight copy '68 Silver Burdett Company. More details/pics upon request. Chapters include-The World of Matter, The World of Living Matter, The Earth and Its Parts, Plant Life on the Earth, Bodies Beyond the Earth, You and Your Body, The Sounds You Hear and How Work is Done.