Vernadsky, George 1887-1973.
Russia at the dawn of the modern age /

. - New Haven : London : Yale University Press,  1972 
. - ix, 347 p.  map.  24 cm. 
<br/>К.: Бібліогр. : c. 306-321, Index 
<br/><label>  ISBN: </label>0-300-01009-5