Langley, Lester D, <br/><br/>
Mexico and the United States :  the fragile relationship / 
Lester D. Langley. 
 - Boston :  Twayne Publishers,  (c)1991. 
 - xvi, 138 pages, 4. pages of plates :  illustrations ;  23 cm. 
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<br/><br/><label>LCCN: </label>90028114 
<br/><br/><label>LC Class. No.: </label>E183  / .M495 1991 E183