Horizontal directional drilling utility and pipeline applications by Willoughby, David A.

Available for University of the Philippines Diliman via McGraw-Hill Access Engineering. Click here to access
Also available remotely for University of the Philippines Diliman via McGraw-Hill Access Engineering. Click here to access thru EZproxy

Horizontal directional drilling utility and pipeline applications by Willoughby, David A.

Plastic piping handbook by Willoughby, David A.

Available for University of the Philippines Diliman via McGraw-Hill Access Engineering. Click here to access
Also available remotely for University of the Philippines Diliman via McGraw-Hill Access Engineering. Click here to access thru EZproxy

Plastic piping handbook by Willoughby, David A.

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