Helene , . <br/><br/>
The Tree of Language /  Textual Documents 
Helene & Charlton Laird. 
 - 1st ed. / 
 - London :  Faber And Faber ,  1966. 
 - 216p. ;  18cm. 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0 571 06658 5 
<br/><br/><label>Subjects--Index Terms: </label>English language Linguistics G-Languages 
<br/><br/><label>Dewey Class. No.: </label>420  / H 369 T