• The Strange Case of Crop-Circles (1992)
• Re-Inventing Japan (1992)
• Rooster's Hamlet (1992)
• Kaboom! (1991)
• More Kaboom! (1991)
• Animal Behavior: Partnerships, 2nd ed. (1991)
• Erosion and Weathering (1991)
• Mirrors of Time (1991)
• Spring Brings Changes (3rd Edition) (1991)
• The Cholesterol Factor (1991)
• Breath of Life: Our Respiratory System (1992)
• Journey Through the Solar System (1991)
• Transformations: Science, Technology and Society (1991)
• Soul (1993)
• Food into Fuel: The Digestive System (1992)
• When the Bay Area Quakes (1991)
• The World of Protozoa (1992)
• Science Primer (1992)
• Women in Science Series (1990)
• Animals Around You Series (1992)
• Electrical Current and Magnetism (1992)
• How Scientists Know About Human Evolution (1991)
• How Scientists Know About Punctuated Equilibria (1991)
• Trees: Evergreens and Deciduous (1992)
• Hands On! Scientific Inquiry and Problem Solving (1991)

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