Focus on grammar.  An introductory course for reference and practice. 

 - 4 v. :  ill. ;  28 cm. 
<br/><br/>Student book / Irene E. Schoenberg, Jay Maurer -- Teacher's manual / Karen Davy -- Workbook / Samuela Eckstut -- Answer key / Irene E. Schoenberg, Jay Maurer. 
<br/><br/><label>ISBN: </label>0201619792 (Student book) 0130874582 (Teacher's manual) 0131117815 (Workbook) 0130408808 (Answer key) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--Study and teaching--Foreign speakers<br/>English language--Grammar--Textbooks for foreign speakers<br/>English language--Study and teaching--Foreign speakers<br/>English language--Textbooks for foreign speakers--Textbooks for foreign speakers