齒輪

[NT 60487] Overview

[NT 60478] Works:	2 [NT 60520] works in 2 [NT 60521] publications in 1 [NT 60522] languages

[NT 60480] Titles

齒輪簡易設計 [NT 59711] by: 郭蘅 ([NT 1579] Language materials, printed)

齒輪之設計製造 [NT 59711] by: 張永爵 ([NT 1579] Language materials, printed)