Sarafyan, Nubar <br/><br/>
The principles of least efforts and evolution / 
Nubar Sarafyan. 
 - Yerevan :  S. n.,  s. d. 
 - xv, 285 p. 
<br/><br/>Bibliogr.: p. 266-286 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrophysics