TY - BOOK ID - 145465473 TI - Planning and estimating underground construction PY - 1970 PB - New York, NY : McGraw-Hill, DB - UniCat KW - Tunneling. KW - Excavating equipment KW - Shields tunneling UR - https://www.unicat.be/uniCat?func=search&query=sysid:145465473 AB - ER -