By what succession of events did the plants, the birds and other animals as well as man come into this particular part of the country? ... Signs and labels should be skillfully designed and the messages on them should be carefully edited. ... Here naturalists have located photographs, drawings, diagrams and animated models illustrating the life of the saguaro and other forms of cacti found in the trail area.
Title | : | Trail Planning and Layout |
Author | : | Byron L. Ashbaugh |
Publisher | : | - 1965 |
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