Singer, Ignatius <br/><br/>
Some unrecognized laws of nature :  an inquiry into the causes of physical phenomena, with special reference to gravitation / 
by Ignatius Singer and Lewis H. Berens 
 - London :  John Murray,  1897 
 - xvi, 483 p. :  ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravitation<br/>Force and energy
<br/><br/><label>Dewey Class. No.: </label>531.5