Heyfelder, Oscar,    1828-1890 <br/><br/>
Transkaspien und seine Eisenbahn :  Nach Acten des Erbauers Generallieutenant M. Annenkow / 
bearb. von Dr. O. Heyfelder ... 
 - Hanover :   Helwingsche Verlagsbuchhandlung,  1889. 
 - x, 159 pages :   folded frontispiece, illustrations, folded plates, folded maps ;  23 cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Annenkov, M. V.  1835-1899 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Asia, Central  --Description and travel<br/>Asia, Central --Economic conditions