@article{120816, recid = {120816}, author = {Lewis, Mark R. and Haeni, F. P.}, title = {The use of surface geophysical techniques to detect fractures in bedrock : an annotated bibliography /}, publisher = {U.S. G.P.O.,}, address = {Washington :}, pages = {iv, 14 p. ;}, year = {1987}, note = {"Prepared in cooperation with U.S. Department of Energy."}, url = {http://library.usi.edu/record/120816}, }