@article{53691,
      note = {"Based on a symposium held at the annual meeting of the  American Society of Range Management in Albuquerque, New  Mexico on February 12-15, 1968."},
      author = {Van Dyne, George M.,},
      url = {http://library.usi.edu/record/53691},
      title = {The Ecosystem concept in natural resource management,},
      publisher = {Academic Press,},
      recid = {53691},
      pages = {xii, 383 p.},
      address = {New York,},
      year = {1969},
}