Cumulative pattern practices  lessons I-XX from an intensive course in English 
by the Research staff of the English Language Institute, Charles C. Fries, director. 
 - [Ann Arbor]  English Language Institute, University of Michigan  1954. 
 - viii, 171 p.  illus. (part fold.)  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for foreign speakers--Spanish.