@article{55566,
      author = {Heacock, John G.,},
      url = {http://library.usi.edu/record/55566},
      title = {The structure and physical properties of the earth's  crust. John G. Heacock, editor.. Symposium on the Structure  and Physical Properties of the Earth's Crust},
      publisher = {American Geophysical Union,},
      recid = {55566},
      pages = {x, 348 p.},
      address = {Washington,},
      year = {1971},
}