Hills, Theo L. <br/><br/>
The St. Lawrence Seaway / 
Theo L. Hills 
 - New York  :  Praeger,  1959 
 - 157 p. :  ill ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Canal transportation
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Saint Lawrence Seaway<br/>Saint Lawrence River--Power utilization
<br/><br/><label>Dewey Class. No.: </label>386.4097