Trignometry / 
s.n. 
 -  weeded out,  1900 
 - p. ;  22 cm. 
<br/><br/><label>ISBN: </label>9780669398199 
<br/><br/><label>Subjects--Topical Terms: </label><br/>weeded out
<br/><br/><label>Dewey Class. No.: </label>0 .W-T