Industrial and Social History Series _By KATHARINE ELIZABETH DOPP, Ph.D._ Author of _The Place of Industries in Elementary Education_ +Book I. THE TREE-DWELLERS.+ THE AGE OF FEAR. Illustrated with a map, 14 full-page and 46 text drawings in half-tone by HOWARD V. BROWN. Cloth. Square 12mo. 158 pages. _For the primary grades._…
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