ऋग्वेद - संहिता (चतुर्थ अष्टक) 
Ṛgveda - saṃhitā (caturtha aṣṭaka) 
 - Calcutta  Shree Harisharan Das 
 - 727 p. 
<br/><br/> Text and commentary. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hinduism<br/>Vedas<br/>Rigveda
<br/><br/><label>Dewey Class. No.: </label>Sa2V1  / SAY/DUT