Papers and discussions.

Bibliographic Details
Corporate Authors:	Symposium on Exploration Drilling, Drilling Symposium, Drilling and Blasting Symposium, Drilling Symposium Exploration Drilling
Format:	Conference Proceeding
Language:	English
Published:	[v.p.] [publisher not identified] ;
Series:	Bulletin (Pennsylvania State University. Earth and Mineral Sciences Experiment Station) ; 72. Colorado School of Mines quarterly.
Subjects:	Boring > Congresses. Blasting > Congresses. Borings > Congresses.

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