by Wendi Goldsmith, Donald Gray, John McCullah
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Social aspects of Useful plants · Crops
Seeds of Change
1985
Useful Plants · Dietary supplements
Dietary supplements of plant origin
2003
Medicinal plants · Plants, Useful
Guide to wild foods and useful plants
1999
Herb gardening · Utilization
The complete book of herbs & spices
1979
Lavenders · Popular works
The story of lavender
Cigarettes · Crops
Seeds of wealth
Food crops · Juvenile literature
Plant products
2002
Cultivated Plants · Plant conservation
Green inheritance
1984
Human-plant relationships · Research
People-plant relationships
1994
Cultivated Plants · Agriculture
Keeping it living
2005
Iroquois Indians · Indians of north america, east (u.s.)
Parker on the Iroquois
1968
Botany · Classification
The useful plants of West tropical Africa
Water · Soil conservation
Reviews of Environmental Contamination and Toxicology
1995
Soil conservation · Life sciences
Residue Reviews
1972
Soil conservation · Bibliography
Abstracts of recent published material on soil and water conservation
1954
Soil conservation · Soil erosion
Soil conservation
1971
Vegetarianism · Environmental aspects
The Vegetarian Myth
2009
Soil mechanics · Soil liquefaction
Soil liquefaction