Microtunneling forges ahead (very small diameter tunnel boring machines)

Microtunneling forges ahead (very small diameter tunnel boring machines)

Title
Microtunneling forges ahead (very small diameter tunnel boring machines)
Author
ENGINEERING NEWSRECORD
Publish Date
30 Apr 1976
Media Type
CDROM / Disks
Call Number
624(05) ENG
Code
7759

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