Twelvetrees, W. H.  1848-1919. <br/><br/>
The Bald Hill osmiridium field / 
by W.H. Twelvetrees. 
 - Hobart :  John Vail, Govt. Printer,  1914. 
 - 44 p., [4] leaves of plates :  ill., folded maps ;  22 cm. 
 - Geological Survey bulletin ;  no. 17 .
 - Geological Survey bulletin (Tasmania. Geological Survey) ;  no. 17. .
<br/><br/> At head of title: Tasmania. Department of Mines.  "Issued under the authority of the Honourable J.E. Ogden, Minister for Mines." 
<br/><br/><label>LCCN: </label>gs 14000754  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources--Australia--Tasmania.
<br/><br/><label>LC Class. No.: </label>QE346  / .A3 no. 17