Boyd, Denise
Lifespan development
Pearson, 2005
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Craig, Garce J.
Human development
Prentice-Hall, 1992
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Zanden, James W. Vander
Human development
McGraw-Hill, 1993
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Turner, Jeffrey S.
Lifespan development
Holt, Rinehart and Winston, 1987
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Turner, Jeffrey S.
Lifespan development
Harcourt Brace College, 1995
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