Design and development of a two post rotary-percussion drilling rig

Bibliografski detalji
Izdano u:	Philippine Engineering Journal Vol. 16, no. 1 (1995), 103-118
Glavni autor:	Borlagdan, Paterno
Format:	Članak
Jezik:	English
Izdano:	1995
Teme:	Rotary percussion drills Irrigation equipment Spark ignition engines