The Big Book of Knowledge by Claire Philip, Polly Cheeseman Paperback Description Discover the answers to over 500 questions about our wonderful world! Product Details Weight 16.00 oz Dimensions 10.00 × 7.00 × 0.50 in Format Paperback Author Claire Philip, Polly Cheeseman Product Type Book Collection $5 to $20 Age Range 10, 11, 12, 13, 8, 9