Boker,ann <br/><br/>
ship or sheep  : an intermediate pronunciation course 
/ Ann Baker; with cartoons by Leslie Marshall 
. - 2nd ed. 
. - London  : Cambridge university press, c1981
. - 168 p.  : ill.  ; 21 cm.  3 cassettes 
<br/><br/><label>ISBN: </label>052128354X 
<br/><br/><label>Source: </label> Don britannique 
<br/><br/><label>Universal Decimal Class. No.: </label>802.0.