�Elementarnoe vvedenie v geometri�i�u Lobachevskogo /
Main Author: | |
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Format: | Book |
Language: | Russian |
Published: |
Moskva :
Gos. izd-vo tekhniko-teoret. lit-ry,
1953
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Subjects: |
Physical Description: | 248 p. : ill. ; 21 cm |
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