1.

図書
図書
1. Risk management for park, recreation, and leisure services. 3rd ed. / James A. Peterson, Bruce B. Hronek (: pbk)
Peterson, James A. (James Albert) ; Hronek, Bruce B.
出版情報: Champaign, Ill. : Sagamore Publishing, c1997
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2.

図書
図書
2. Liability and law in recreation, parks, and sports
Ronald A. Kaiser
出版情報: Englewood Cliffs, N.J. : Prentice-Hall, 1986
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