00658cam a22001574a 4500952015000000999001700150020002200167082001500189100001900204245003400223260002900257300003500286505003300321650013900354942000700493  00104070aGGLbGGLd2019-04-16ePak Book Corporationg4451.04l0o523.7 MACp38460r2019-08-29 00:00:00t1uRiphah international universityyBK  c24416d24416  a1852335270 ((pbk)04a523.7bMAC1 aMacdonald, Lee10aHow to observe the sun safely  aNew YorkbSpringerc2003  aix, 176 p.b: ill.c; 23.5 cm.  aIncludes appendix and index.  aPhysicsaSun-Observers aPosition measurement aSolar photographyaHydrogen-AlphaaSolar drawingaObserving sunvAstronomyvSunvRICAS  cBK