TY  - BOOK
AU  - Kramer,Steven R.
AU  - McDonald,William Jesse
AU  - Thomson,James C.
TI  - An introduction to trenchless technology
SN  - 0442002327
AV  - TA815 K73 1992
U1  - 624 20
PY  - 1992///
CY  - New York
PB  - Van Nostrand Reinhold
KW  - Construccion de trincheras
N1  - Includes bibliographical references (p. 211-217) and index
ER  -