TY  - BOOK
AU  - Jager Cornelis De
TI  - Reports on astronomy
T2  - Transactions of the international astronomical union
U1  - B9, L0.14 
PY  - 1970///
CY  - Holland
PB  - D. Reidel Publishing Company    
KW  - MATHEMATICS
N1  - DSK Collection
ER  -