TY - BOOK ID - 128379822 TI - Outdoor recreation in America: trends, problems, and opportunities, AU - Jensen, Clayne R. AU - National Recreation and Park Association. PY - 1973 SN - 0808710133 PB - Minneapolis, Minn. : Burgess Pub. Co., DB - UniCat KW - Outdoor recreation UR - https://www.unicat.be/uniCat?func=search&query=sysid:128379822 AB - ER -