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

Bibliografiske detaljer
Udgivet i:	Philippine Engineering Journal Vol. 16, no. 1 (1995), 103-118
Hovedforfatter:	Borlagdan, Paterno
Format:	Article
Sprog:	English
Udgivet:	1995
Fag:	Rotary percussion drills Irrigation equipment Spark ignition engines