1.

図書
図書
1. Y's way to fitness walking : leader's guide
June I. Decker, Georgia Orcutt, Patricia Sammann
出版情報: Champaign, IL : Published for YMCA of the USA by Human Kinetics Publishers, c1989
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2.

図書
図書
2. The complete book of exercisewalking (pbk.)
Gary D. Yanker
出版情報: Chicago : Contemporary Books, c1983
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