A Guidebook :  For the international simposium on the history of geology / 
Armenian SSR Akademy of sciences. Institute of Geologigal scieces 
 - Yerevan :  Publishing house of the Armenian academy of sciences,  1967 
 - 101 p.  ill  20 cm 
<br/><br/><br/>Text english, armenian 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography :--Geologia