@article{U.S. Geological Survey, Books and Open-File Reports Section Denver Federal Center, Box 25286 Denver, CO 80225,
      note = {Description based on: 1990-91; title from cover.},
      url = {http://library.usi.edu/record/240751},
      title = {Water-resources investigations in Pennsylvania programs  and activities of the U.S. Geological Survey / [microform]  :},
      publisher = {The Survey ;},
      number = {U.S. Geological Survey, Books and Open-File Reports  Section Denver Federal Center, Box 25286 Denver, CO 80225},
      recid = {240751},
      pages = {v. :},
      address = {Lemoyne, Pa. :},
}