TY  - SER
TI  - Proceedings of the koninklijke nederlandse akademie van watenschappen. Series B: Physical sciences
SN  - 0023-3366
PY  - 1971///-
CY  - Amsterdam
PB  - North-Holland Publishing Company
KW  - Science
KW  - Periodicals
N1  - UKM: v.74-82 (1971-1979).  Langganan tamat
ER  -