00610nam a2200181Ia 4500003000900000008004100009040001600050080001700066100003400083245006900117260004400186300001500230650004100245700002700286942000700313999001500320952009300335IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a621.383bCAM  aCampbell, Robert Norman92229 0aPhotoelectric cellscNorman Robert Campbell and Dorothy Ritchie.  aLondonbSir Isaac Pitman and Sonsc1929  avii, 209p.  aAstronomy and Astrophysics Thesaurus  aRitchie, Dorothy92230  cBK  c1033d1033  00104070aBANbKODcGENd0000-00-00l0o621.383/ CAMp1079r2021-11-05w0000-00-00yBK