Concrete ships :
a possible solution of the shipping problem /
published by Portland Cement Association.
APA Citation
Portland Cement Association. (1917). Concrete ships: a possible solution of the shipping problem. Chicago: The Association.
MLA Citation
Portland Cement Association. Concrete Ships: a Possible Solution of the Shipping Problem. Chicago: The Association, 1917.
Warning: These citations may not always be complete (especially for serials).