KOVALEV, Pavel Vasil'evich <br/><br/>
Kavkaz.  Ocherk prirody 

 - Moskva  Gos. Izd. Geograficheskoi Literatury  1954 
 - 78p., plates, illus., map.  21cm. 
<br/><br/> In Russian 
<br/><br/><label>Dewey Class. No.: </label>722