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

Detalles Bibliográficos
Publicado en:	Philippine Engineering Journal Vol. 16, no. 1 (1995), 103-118
Autor principal:	Borlagdan, Paterno
Formato:	Artículo
Lenguaje:	English
Publicado:	1995
Materias:	Rotary percussion drills Irrigation equipment Spark ignition engines