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2
3
Published: 1876
Superior document: Materīaly dlja geologīi Kavkaza : Geologičeskoe opisanie 1875
4
Published: 1877
Superior document: Materīaly dlja geologīi Kavkaza : Geologičeskoe opisanie 1877
5
Published: 1874
Superior document: Materīaly dlja geologīi Kavkaza : Geologičeskoe opisanie 1873
6
Published: 1875
Superior document: Materīaly dlja geologīi Kavkaza : Geologičeskoe opisanie 1875