The true science library;
12 v. illus.
Content notes : v. 1. Above and beyond -- v. 2. World of physical wonders -- v. 3. Animals and their care -- v. 4. Nature -- v. 5. Strange creatures -- v. 6. Water creatures -- v. 7. Animals that work for man -- v. 8. Wonders of growth -- v. 9. Plant life -- v. 10. Power -- v. 11. Horizons to explore -- v. 12 Index and teacher's guide.
