APA Style
Gessford, John Evans. ().
The State of population theory: forward from malthus. .
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Chicago Style
Gessford, John Evans.
The State of population theory: forward from malthus..
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MLA Style
Gessford, John Evans.
The State of population theory: forward from malthus..
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,
.
.
Turabian Style
Gessford, John Evans.
The State of population theory: forward from malthus..
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,
.
.