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01201pam a2200337 i 4500 001 F7826E882AD411DEB2886305A8D7520A 005 20181009010727 008 780821s1978 nyua j 00110 eng 010 $a 78004320 020 $a 9780802763372 020 $a 0802763375 040 $d SILO 050 0 $a QB843.B55 $b A85 1978 082 $a 523.8 100 10 $a Asimov, Isaac, $d 1920- 245 1 $a How did we find out about black holes? / $c by Isaac Asimov ; illustrated by David Wool. 260 0 $a New York : $b Walker, $c c1978. 300 $a 64 p. : $b ill. 490 0 $a How did we find out ... series 500 $a Includes index. 506 $a Grades 4-6. 520 $a Discusses why scientists believe in the existence of black holes, what they are, how they are formed, and how they are detected. 650 0 $a Black holes (Astronomy) 650 0 $a Black holes (Astronomy) $x Children's nonfiction. 939 $a 1065157 941 $a 4 952 $l MXPG943 $d 20180720024959.0 952 $l CUPC586 $d 20090701080000.0 952 $l SHPC094 $d 20090701080000.0 952 $l W5PA943 $d 20090701080000.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=F7826E882AD411DEB2886305A8D7520AInitiate Another SILO Locator Search