Thomson, A. J. <br/><br/>
A practical english grammar :  exercise / 
A. J. Thomson and Martinet A. V. 
 - 3a ed. 
 - New York :  Oxford University Press,  1994. 
 - 2 V. 
<br/><br/>v.1: Articles.--Auxiliary verbs.--Present and past tenses.--Future forms.--Conditional.--Infinitive.--Gerund, infinitive and participles.--Gerund, infinitive and participles.--Passive.--Indirect speech.--Purpose.--Key 
<br/><br/><label>ISBN: </label>0194313533 v.1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ingles--Enseñanza.
<br/><br/><label>Dewey Class. No.: </label>421  / T46ap