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

Dades bibliogràfiques
Publicat a:	Philippine Engineering Journal Vol. 16, no. 1 (1995), 103-118
Autor principal:	Borlagdan, Paterno
Format:	Article
Idioma:	English
Publicat:	1995
Matèries:	Rotary percussion drills Irrigation equipment Spark ignition engines