Marker, M. E. <br/><br/>
Echo cave:  a tentative Quaternary chronology for the Eastern Transvaal 
[by] M. E. Marker and G. A. Brook. 
 - Johannesburg,  University of the Witwatersrand, Dept. of Geography and Environmental Studies,  1970. 
 - Environmental studies .
 - Johannesburg. University of the Witwatersrand. Dept. of Geography and Environmental Studies. Occasional paper  no. 3 .
 - University of the Witwatersrand. Dept. of Geography and Environmental Studies. Occasional paper ;  University of the Witwatersrand. Dept. of Geography and Environmental Studies. Occasional paper ;  University of the Witwatersrand. Dept. of Geography and Environmental Studies. Occasional paper ;  no. 3 .
<br/><br/>Bibliography: p. 37-38. 
<br/><br/><label>ISBN: </label> R0.50 
<br/><br/><label>LCCN: </label>73159844 
<br/><br/><label>Nat. Bib. No.: </label>SANB*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic -- Quaternary.--Geology, Stratigraphic -- Quaternary.<br/>Geology -- South Africa -- Echo Caves.--Geology -- South Africa -- Echo Caves.--Geology -- South Africa -- Echo Caves.
<br/><br/><label>LC Class. No.: </label>QE696  / .M376 
<br/><br/><label>Dewey Class. No.: </label>551.7/9/09682