TY  - BOOK
AU  - Katgert-Merkelijn, J. K.
TI  - The letters and papers of Jan Hendrik Oort: as archeived in the University library, Leiden
T2  - Astrophysics and space science library; v. 213
SN  - 0-7923-4542-8
PY  - 1997///
CY  - Dordrecht
PB  - Kluwer Academic
KW  - Jan Hendrik Oort
KW  - Letters and papers
ER  -