00608nam a2200169Ia 4500003000900000008004100009020001800050040001600068080002300084100002900107245015500136260003700291300001500328490005100343650002100394650002300415IN-BaIIA211028s9999    xx            000 0 eng d  a0-7923-4542-8  cIIA Library  a52(082.1)bASS-213  aKatgert-Merkelijn, J. K. 4aThe letters and papers of Jan Hendrik Oortbas archeived in the University library, LeidencJ. K. Katgert-Merkelijn                                     aDordrechtbKluwer Academicc1997  axxx, 198p.  aAstrophysics and space science library; v. 213  aJan Hendrik Oort  aLetters and papers