Informix-4GL by example :  version 4.1.0 / 
Dawn Maneval ... [et al.] 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1993 
 - 732 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0131003550 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database management<br/>INFORMIX--4GL (Computer program)<br/>UNIX (Computer file)