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Outdoor recreation a legacy for America. Appendix "A" an economic analysis
- "Summary of outdoor recreation in America, 1972-1978"@en
- "Outdoor recreation facility cost estimates"@en
- "Outdoor recreation a legacy for America. Appendix "A" an economic analysis"@en
- "Outdoor recreation : a legacy for America. Appendix "A" an economic analysis"@en
- "Outdoor recreation: a legacy for America; Appendix A, an economic analysis"@en
- "Outdoor recreation - a legacy for America - appendix a - an economic analysis"
- "Outdoor recreation : a legacy for America: appendix A, an economic analysis"@en
- "Outdoor recreation: a legacy for America : appendix "A", an economic analysis"@en