01057nam a2200229Ia 4500003000900000008004100009040001600050080002100066111011000087245026100197260003800458300001000496500002600506650002800532650004100560650003500601700002900636710004300665942000700708999001500715952009700730IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a520.34(063)bIRW  aNational Science Foundation Astronomical Photoelectric ConferencecArizonad1953 Aug. 31 - Sept. 1912795 0aAstronomical photoelectricbproceedings of the National Science Foundation Astronomical Photoelectric Conference held at Lowell Observatory Flagstaff, Arizona August 31 - September 1, 1953cedited by John B. Irwin                                             aArizonabLowell Observatoryc1953  a122p.  aDonated by Mrs. Bappu  aAstronomical Photometry  aAstronomy and Astrophysics Thesaurus  aPhotoelectric Photometry92971  aIrwin, John B ed.912796  aNational Science Foundation 912797  cBK  c7521d7521  00104070aBANbBANcGENd1983-07-15l0o520.34(063)/ IRWp8333r2021-11-05w1983-07-15yBK