South African tunnelling /

South African tunnelling /

51

ग्रंथसूची विवरण
मुख्य लेखक: South African National Committee on Tunnelling
स्वरूप:
प्रकाशित: Bedfordview, Transvaal : Brooke Pattrick, [19-
विषय:
Tunneling
Mining engineering

समान संसाधन