TY  - BOOK
AU  -  Shapley,A.H.
TI  -  International geophysical year, second supplement to the draft manua l for world days and communication/ 
PY  - 1957///
CY  -  Colorado : 
PB  -  National Academy of sciences , 
KW  -  International geophysical year
KW  -  1957
KW  -  Observatorie
KW  -  Research
ER  -