Irala, Narciso <br/><br/>
Mental Efficiency Without Fatigue 

 - Allahabad  St. Paul Society 
<br/><br/><label>Subjects--Uniform Titles: </label>--GENERAL STACK
<br/><br/><label>Subjects--Topical Terms: </label><br/>PHILOSOPHY & PSYCHOLOGY--HUMANKINDGeneralia--EPISTEMOLOGY, CAUSATION & HUMANKIND
<br/><br/><label>Dewey Class. No.: </label>128.2  / TRA-M