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

Détails bibliographiques
Publié dans:	Philippine Engineering Journal Vol. 16, no. 1 (1995), 103-118
Auteur principal:	Borlagdan, Paterno
Format:	Article
Langue:	English
Publié:	1995
Sujets:	Rotary percussion drills Irrigation equipment Spark ignition engines