Przhevalsky, E. Five-Figure Tables of Logarithms of Numbers and Trigonometric Quantities (Pyatiznachnye tablitsy logarifmov chisel), 1927. In Russian.

Пржевальский Е.
Пятизначные таблицы логарифмов чисел и тригонометрических величин. / С прибавлением логарифмов Гаусса, квадратов чисел, квадратных и кубичных корней из чисел и некоторых других таблиц.
Москва — Ленинград : Государственное издательство (Госиздат), 1927.
203 с. ; Уменьшенный формат. Картонаж. Издание 9-е, стереотипное. (Серия: Пособия для трудовой школы).
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Przhevalsky, Evgeny.
Five-Figure Tables of Logarithms of Numbers and Trigonometric Quantities. / With the addition of Gaussian logarithms, squares, square and cubic roots, and other tables.
Moscow — Leningrad : Gosizdat, 1927.
203 pp. ; Pocket format. Original hardcover. 9th stereotyped edition. (Series: Manuals for the Labor School). In Russian.

This 1927 edition of Evgeny Przhevalsky’s mathematical tables is a quintessential artifact of early Soviet educational reform, published under the "Manuals for the Labor School" series. Przhevalsky, a prominent educator of the late Imperial and early Soviet periods, designed these tables to provide the high degree of precision necessary for engineering, navigation, and advanced pedagogical training before the age of digital calculation. The volume is much more than a simple list of values; it is a comprehensive computational toolkit. The text provides a deep dive into the internal logic of logarithmic calculation, including the arrangement of five-figure mantissas, trigonometric functions, and the specialized Gaussian logarithms used for addition and subtraction in logarithmic form.