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

書目詳細資料
發表在:	Philippine Engineering Journal Vol. 16, no. 1 (1995), 103-118
主要作者:	Borlagdan, Paterno
格式:	Article
語言:	English
出版:	1995
主題:	Rotary percussion drills Irrigation equipment Spark ignition engines