Secrets of the Seeds: Guide to Science Anytime (0153060700 9780153060700 0-15-306070-0)
Science Anytime (0153061669 9780153061660 0-15-306166-9)
Starbase Earth: Guide to Science Anytime, 1995 by Harcourt Brace Staff (0153060654 9780153060656 0-15-306065-4)
