8
by Noemi, Juan.
Published 2004
Available via ProQuest Ebook Central
eBook
9
by Ochoa, Hugo.
Published 2003
Available via ProQuest Ebook Central
eBook
14
Published 2011
Available via EBSCO eBook Collection
eBook
15
Published 2011
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Electronic
16
by Benson, Dennis C.
Published 1975
Book
17
by Bower, William Clayton, 1878-
Published 1967
Book
19
Published 1974
Book
20