000 00670nas a2200229uu 4500
000 00568cam a22001693a 4500
001 21978
003 PGUSA
005 20160229140054.0
008 070630s2007||||xxu|||||s|||||000 | eng d
040 _a PGUSA
_b eng
042 _a dc
050 4 _aTS
100 _a Playtner, H. R.
245 _a An Analysis of the Lever Escapement
_h [recurso electrónico] /
_c H. R. Playtner
260 _b Project Gutenberg,
_c 2007
506 _a Public domain in the USA.
516 _a Text
653 _a Clocks and watches -- Escapements
830 _a Project Gutenberg
_v 21978
856 _u http://www.gutenberg.org/ebooks/21978
999 _c24165
_d24165