Gregory , R.A.. <br/><br/>
A Manual of Elementary Science /  Textual Documents 
R.A.Gregory & A.T.Simmons. 
 - 1st ed. / 
 - New York :  Macmillan and co ,  1901. 
 - 429p. :  ill ;  19cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Elementary Science G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>500  / G 862 M