Abril y Ostaló, Mariano <br/><br/>
Alemania ante el conflicto europeo 
Mariano Abril. 
 - San Juan, Porto Rico  Progress Pub. Col.  1915. 
 - 222 p.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War--Causes.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Germany.--Civilization.<br/>Soviet Union.--Civilization.<br/>Great Britain.--Civilization.<br/>France.--Civilization.