31.
 |  | Title: Discovery Pac: Insects (Ranger Rick Naturescope Series) by Rick Ranger, National Wildlife Federation ISBN: 0945051352 Publisher: Natl Wildlife Federation Pub. Date: May, 1991 List Price: $10.95 Amazon.com Price: $10.95 |
32.
 |  | Title: Bobcat Research Conference Proceedings: Current Research on Biology and Management of Lynx Rufus: October 16-18, 1979, Conference and Research Center, National Zoological Park, Smithsonian (National Wildlife Federation Scientific & Technical Series, No. 6.) by Bobcat Research Conference, Lynn Giroux Blum, Peter C. Escherich, National Wildlife Federation, Endangered Species Scientific Authority ISBN: 0912186364 Publisher: Natl Wildlife Federation Pub. Date: October, 1979 List Price: $10.00 Amazon.com Price: $10.00 |
33.
 |  | Title: Cardinals 2001 Calendar by National Wildlife Federation ISBN: 1559717297 Publisher: NorthWord Press Pub. Date: August, 2000 List Price: $10.95 Amazon.com Price: $10.95 |
34.
 |  | Title: Wading into Wetlands (Ranger Rick's Naturescope Series) by Judy Braus, National Wildlife Federation ISBN: 0945051441 Publisher: Natl Wildlife Federation Pub. Date: May, 1991 List Price: $7.95 Amazon.com Price: $7.95 |
35.
 |  | Title: Manatees 2000 Calendar by National Wildlife Federation ISBN: 1559716940 Publisher: NorthWord Press Pub. Date: August, 1999 List Price: $10.95 Amazon.com Price: $10.95 |
36.
 |  | Title: Moose Country 2000 Calendar by National Wildlife Federation ISBN: 1559716959 Publisher: NorthWord Press Pub. Date: August, 1999 List Price: $10.95 Amazon.com Price: $10.95 |
37.
 |  | Title: Earthscape: Exploring Endangered Ecosystems by McGraw-Hill Companies, National Wildlife Federation, McGraw-Hill ISBN: 0078529565 Publisher: McGraw Hill Text Pub. Date: April, 2000 List Price: $199.95 Amazon.com Price: $199.95 |
38.
 |  | Title: Orca Whales 2001 Calendar by National Wildlife Federation ISBN: 155971736X Publisher: NorthWord Press Pub. Date: August, 2000 List Price: $10.95 Amazon.com Price: $10.95 |
39.
 |  | Title: Proceedings of the Western Raptor Management Symposium and Workshop (National Wildlife Federation Scientific & Technical Series, No. 12.) by Western Raptor Management Symposium and Workshop, Beth Giron Pendleton, Beth A. Giron Pendleton, National Wildlife Federation ISBN: 0945051026 Publisher: Natl Wildlife Federation Pub. Date: May, 1989 List Price: $10.00 Amazon.com Price: $10.00 |
40.
 |  | Title: Amazing Mammals: Part I (Ranger Rick's Naturescope Series) by Judy Braus, National Wildlife Federation ISBN: 0945051298 Publisher: Natl Wildlife Federation Pub. Date: June, 1991 List Price: $7.95 Amazon.com Price: $7.95 |