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21
by Sampson, Scott D.
Published 2009
Book
22
by Prothero, Donald R.
Published 2009
Book
23
by Bakker, Robert T.
Published 1986
Book
24
Published 1990
Book
25
by Czerkas, Sylvia Massey.
Published 1990
Book
26
by Lockley, M. G.
Published 1991
Book
27
Published 1997
Book
28
by Dingus, Lowell.
Published 1998
Book
29
by Fastovsky, David E.
Published 1996
Book
30
by Currie, Philip J.
Published 1997
Book
33
by Gallagher, William B.
Published 1997
Book
34
by Glut, Donald F.
Published 1997
Book
35
by Officer, Charles B.
Published 1996
Book
36
by Ostrom, John H.
Published 1966
Book
37
by Lambe, Lawrence M. 1863-1919.
Published 1917
Book
38
by Colbert, Edwin H. 1905-2001.
Published 1968
Book
39
by Raup, David M.
Published 1986
Book
40
Published 1989
Book