TransliterationKaulbars, Karl Vasilevich. V zashchitu shtatskogo rebenka. Zashchishchennye reydy-i. tverdaya iskhodnaya tochka uluchshennykh parusnykh sudov: (Raznorodnyy material dlya vospitatelnoy reformy).
In EnglishKaulbars, Karl Vasilyevich. In defense of a civilian child. Protected raids - and. a solid starting point for improved sailing vessels: (Diverse material for educational reform). In Russian
$399