Ritchie W <br/><br/>
Mapping for field scientists   A problem solving ap    

 - London  David and Charles UK         1977 
 - 327p. Bib p. 319-20,Appendix p. 309-18  cm. 
<br/><br/><label>ISBN: </label>0 7153 7272 6 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography
<br/><br/><label>Dewey Class. No.: </label>U11, L7