TY  - BOOK
AU  - Mayer,Harold Melvin
TI  - The port of Chicago and the St. Lawrence saeway / 
PY  - 1957///
CY  - Chicago  : 
PB  - University of Chicago, 
KW  - Shipping
KW  -  St. Lawrence River
N1  -  Includes bibliographical references ( p. 273-283.)
ER  -