Lewis, Henry.
A concise comparative celtic grammar /
Henry Lewis, Holger Pedersen 
. - Edition 3rd 
. - Gt̲tingen : Vandenhoeck & Ruprecht,  1974 
. - xix, 442, 19 p.  24 cm. 
<br/>К.: Бібліогр. : c. xiii-xix 
<br/><label>  ISBN: </label>3-525-26102-0