Food from sunlight : planetary survival for hungry people, how to grow edible algae and establish a profitable aquaculture /Author: Hills, Christopher B.
Publisher: Boulder Creek, CA : World Hunger Research Project, University of the Trees Press,
Date: c1978. This title can be found in 3 Iowa libraries.
Exploring inner space : awareness games for all ages : a handbook for parents, teachers and everyone /Author: Hills, Christopher.
Publisher: Boulder Creek, Calif. : University of the Trees Press,
Date: c1978. This title can be found in 1 Iowa libraries.
Nuclear evolution : discovery of the rainbow body /Author: Hills, Christopher B.
Publisher: Boulder Creek, Calif. : University of the Trees Press,
Date: c1977. This title can be found in 1 Iowa libraries.
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