Pilkington, Roger <br/><br/>
How boats go uphill / 
by Roger Pilkington ; illustrated by Gordon Cullen 
 - London :  Abelard-Schuman,  1959 
 - 48 p. :  ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Locks (Hydraulic engineering)--Juvenile fiction<br/>Children's stories, English
<br/><br/><label>Dewey Class. No.: </label>823