Obruchev V. A. Transcaspian lowland: a geological and orographic sketch based on the data collected during excursions in 1886-1887-1888 In Russian (ask us if in doubt)/Obruchev V. A. Zakaspiyskaya nizmennost: Geologicheskiy i orograficheskiy ocherk po dannym, sobrannym po vremya ekskursiy v 1886-1887-1888 gg. With appendix 3 tables, drawings and sketches. Notes by the Imperial Russian Geographical Society on general geography. Volume XX, # 3, edited by I. V. Musketov. SKUalb2f86327df9708198.