APA Style
Kolker, Robert.. ().
The Discoverers an encyclopedia of explorers and exploration .
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Chicago Style
Kolker, Robert..
The Discoverers an encyclopedia of explorers and exploration.
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,
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.
MLA Style
Kolker, Robert..
The Discoverers an encyclopedia of explorers and exploration.
:
,
.
.
Turabian Style
Kolker, Robert..
The Discoverers an encyclopedia of explorers and exploration.
:
,
.
.