00271 am a2200109   450000100040000000500170000400800410002104000270006210000190008924500320010826000210014031320260327105958.0      s1991    xr ---------u-------cze d  aGJHKNbczeerdacGJHKN1 aHawking, S. W.10aStručná historie času  bMl. frontac1991