Books by B. R. Eichbaum:
Books in the extended shelves:
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Eichbaum, B. R.: Method for recovering anhydrous ZnCl₂ from aqueous solutions (U.S. Dept. of the Interior, Bureau of Mines, 1991), also by L. E. Schultze (page images at HathiTrust)
Find more by B. R. Eichbaum at your library, or elsewhere.