Gregory, Richard A . <br/><br/>
An Exercise Book Of Elementary Practical Physics /  Textual Documents 
Richard A Gregory. 
 - 1st / 
 - London :  Macmillan and co ,  1901. 
 - 172 p ;  22cm. 
<br/><br/><label>Subjects--Index Terms: </label>Physics 
<br/><br/><label>Dewey Class. No.: </label>530  / G 862 Ex