"Hydraulic Structures (Groins, Dams, Dykes, 

 and Canal Embankments) of Bitumen Type" 

 Rohnish, Bitumen , Heidelberg, 15, No. 9/10, 

 1953. 



5300GR0004 



Key Words - Not Annotated/ 



"Steep Shore of Brodten - Cause of 

 Breaking . . . ." 



Ot tman , Transactions of Museum of Geogra- 

 phy and Natural History , Lubeck, No. 44, 

 1953, pp. 145-195. 



Key Words - Not Annotated/ 



5300GR0005 



"Racine County, Wis., Beach Erosion 5302GR0001 



Control Study" 



U. S. Army Corps of Engineers, House Docu- 

 ment No. 88, 83rd Congress, 1st Session, 

 Feb., 1953. 



Key Words - House Document/Not Annotated/ 



"Area 6 - Niantic Bay to Connecticut River, 5302GR0002 



Connecticut, Beach Erosion Control Study" 

 U, S. Army Corps of Engineers, House Docu- 

 ment No. 84, 83rd Congress, 1st Session, 

 Feb. , 1953. 



Key Words - House Document/Not Annotated/ 



"Precast Concrete Block Groins" 5304GR0001 



Weber, H. , Shore and Beach , American Shore 

 and Beach Preservation Assoc, Vol. 21, 

 No. 1, Apr., 1953, pp. 3-5. (TC330 .Am3) 



Use of concrete blocks for groins is discussed in relation to 

 structural design, durability, economics, and construction procedures. 

 The advantage of blocks is illustrated by actual projects emphasizing 

 fast construction and low cost. 



51 



