• Ecology of the Seacoast: Human Influences (1990)
• Sea Life around Baja California (1989)
• Problems of Conservation: Acid Rain (1990)
• Soil: Preserving a Natural Resource (1990)
• Rivers in Danger Series (1990)
• Shark Bay: Australia's Unique Coastal Habitat (1991)
• Evolution Series (1992)
• Dolphins: A Cry for Help (1989)
• The Ibex and Its Natural Habitat (1990)
• Forests After the Last Ice Age (1990)
• The Management of Nuclear Waste (1982)
• Mathsphere: A Value for Cleanliness (1993)
• Mathsphere: An Exhausting Quest (1993)
• Mathsphere: Something Fishy (1993)
• Mathsphere: Oil Over Troubled Waters (1993)
• Mathsphere: Tragedy of the Commons (1993)
• No Time to Waste (19??)
• In the Cradle of Storms (1992)
• Composting (1993)
• Germany Reunites (19??)
• The California Gold Mining Series (19??)
• The Chinampas (1990)
• Watunna (1990)
• Treasure Islands: Robert Louis Stevenson in the Pacific (1992)
• The Harris' Hawk: A Return to the River (1989)

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