(154) Берта (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "(154) Берта" in Russian language version.

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1wikisource.org

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1books.google.com

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books.google.com (Global: 3^rd place; Russian: 10^th place)

Lutz D. Schmadel. Dictionary of Minor Planet Names (англ.). — Fifth Revised and Enlarged Edition. — Berlin, Heidelberg, New York: Springer, 2003. — P. 29. — ISBN 3-540-00238-3.

wikisource.org (Global: 27^th place; Russian: 4^th place)

ru.wikisource.org

Берта, планета // Энциклопедический словарь Брокгауза и Ефрона : в 86 т. (82 т. и 4 доп.). — СПб., 1890—1907.