Helmersen G.P. Lake Peipsi and the headwaters of the Narova River. In Russian /Gelmersen G.P. Chudskoe ozero i verkhovya reki Narovy. Publishing House of the Academy of Sciences, 1865, 85 pp. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalb766b4bee24e42f0a.