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  1. First issued in 1957 by Swallow Press, this classic guide to the art of plant identification is now familiar to an entire generation of students. Harrington who was Professor of Botany and Curator of the Herbarium at Colorado State University, gives step-by-step instructions and definitions to...
  2. GrowLab: Activities for Growing Minds is a K-8 curriculum guide for use with an indoor classroom garden, from a windowsil to a home-make or ready-to-assemble GrowLab Indoor Garden.