Brown, George D. <br/><br/>
Excursions in geology :  a modular program for physical geology / 
George D. Brown, Jr , George T. Ladd 
 - Boston, Mass. :  Houghton Mifflin,  1973 
 - 236 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0395167337 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Study and teaching (Higher)--Laboratory manuals