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21by Armbruster, David A. (David Alvin), 1890-
Published 1973Edition: 6th ed.Other Authors: '; “...Allen, Robert Herman...”
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22Published 1992Edition: 2nd ed..Other Authors: '; “...Allen, Robert C. (Robert Clyde), 1950-...”
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23Published 1987Other Authors: '; “...Allen, Robert C. (Robert Clyde), 1950-...”
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24Published 1995Other Authors: '; “...Allen, Robert C. (Robert Clyde), 1950-...”
Book -
25
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26by Pirazzoli-t'Serstevens, MichèleOther Authors: '; “...Allen, Robert, 1901-...”
Published 1972
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27Published 1971Other Authors: '; “...Allen, Robert...”
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28
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29Published 1970Edition: 2nd ed.Other Authors: '; “...Allen, Robert J....”
Serial -
30
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31Published 2008Other Authors: '; “...Allen, Robert 1958 Dec. 30-...”
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32