00911nam a2200217Ia 4500003000900000008004100009040001600050080002200066111011200088245018400200260005000384300002300434650001900457650001500476650002500491700002800516700002900544942000700573999001500580952009800595IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a529.2(082.1)bSEM  aInternational Astronomical Union ColloquiumcNational Physical Laboratory, New Delhid1976 nov. 18-2099858 0aTime and frequencybproceedings of the seminar on time and frequency, held in National Physical Laboratory, New Delhi, november 18-20, 1976cedited by B.S. Mathur and  P. Banerjee  aNew DelhibNational Physical Laboratoryc1977  a[various pagings.]  aNASA thesaurus  aTime92741  aTime Frequency99859  aBanerjee, P., ed.99860  aMathur, B. S., ed.99861  cBK  c5686d5686  00104070aBANbBANcGENd1977-12-27l0o529.2(082.1)/ SEMp6361r2021-11-05w1977-12-27yBK