Giebel, Karl,  1879- <br/><br/>
Der Isochronismus bei äußeren Störungen in elementarer Darstellung / 
Karl Giebel. 
 - 61 pages ;  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clocks and watches--Escapements--Effect of environment on.
<br/><br/><label>Subjects--Index Terms: </label>isochronism Germany Giebel, K[arl] theory advanced escapement balance Pocket Watch