TY  - BOOK
AU  - x, x
AU  - x
TI  - Instruction manual for oceanorgraphic observations. : x
SN  - x     
U1  - 551.46/INS(2)  
PY  - 1955///
CY  - U. S. 
PB  - Hydrographic Office 
KW  - Oceanography
N1  - Includes
ER  -