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Amer Council on Exercise
> Richard J. Siebert
Richard J. Siebert
title
ISBN-13
(ISBN-10)
year of publication
American Council on Exercise Personal Trainer Manual
978-O-9618161-1-7
(O-9618161-1-2)
1991
J. S.
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R.J.
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R.J. Siebert
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R. S.
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R. Siebert
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Richard J.
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Richard S.
Richard J. Siegert