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Inventors /
by Hacker, Carlotta,
Publication:
Calgary : Weigl, 2000
. 48 p. :
26 cm.
Date:2000
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Scientists /
by Hacker, Carlotta.
Publication:
New York, NY : Crabtree Pub., 1998
. 48 p. :
26 cm.
Date:1998
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Great African Americans in history /
by Hacker, Carlotta,
Publication:
New York, N.Y., U.S.A. : Crabtree Publishing, 1997
. 64 p. :
, Includes index.
26 cm.
Date:1997
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(1),
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