21
by Kell, Walter G.
Published 1986
Book
22
Book
23
by Suárez Suárez, Andrés S.
Published 1991
Book
24
by Willingham, John J.
Published 1982
Book
25
by Poblete V., Fernando.
Published 1998
Book
26
by Sierra Molina, Guillermo J.
Published 1996
Book
29
by Araya Villca, John.
Published 2001
Book
31
by Lagno Becerra, Cristian.
Published 2002
Book
32
by Heffes, C.P. Gabriel.
Published 1994
Book
33
by Pérez Toraño, Luis Felipe.
Published 1999
Book
34
by López González, Camilo.
Published 1961
Book
35
by Soy i Aumatell, Cristina.
Published 2003
Book
36
by Messier, William F.
Published 2006
Book
38
by Condori Condori, Jessica
Published 2006
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Thesis Book Chapter
40
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