1
by Dege, Wilhelm, 1910-
Published 2004
Book
2
Published 1999
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Electronic
4
Published 2010
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Electronic
5
by Rodnick, David, 1906-
Published 1955
Book
6
by Hveem, Helge.
Published 1972
Book
7
by Petrow, Richard.
Published 1974
Book
8
by Popperwell, Ronald G.
Published 1972
Book
9
by Brundtland, Gro Harlem.
Published 2002
Book
10
by Kagda, Sakina, 1939-
Published 2006
Book
11
by Gjerset, Knut, 1865-1936.
Published 1969
Book
12
by Burgess, Philip M.
Published 1968
Book
13
by Eckstein, Harry.
Published 1966
Book
14
by Hintz, Martin.
Published 1982
Book
15
Published 2001
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Electronic
17
by Derry, T. K. 1905-
Published 1973
Book
18
by Derry, T. K. 1905-
Published 1957
Book
19
by Dregni, Eric, 1968-
Published 2008
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Electronic
20
Published 1999
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Electronic