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1Materīaly dl︠i︡a statistiki glist v naselenīi PeterburgaМатеріалы для статистики глист в населеніи Петербурга /by Kessler, D. A. (Dmitrīĭ Aleksandrovich), b. 1856
Published 1888S.-Peterburg : Tip. ︠I︡A. Treĭ, 1888.29 p. ; 22 cm. -
2Materīaly k bakterīologicheskomu izsl︠i︡edovanī︠i︡u vozdukhaМатеріалы к бактеріологическому изслѣдованію воздуха /by Keldysh, Nikolaĭ
Published 1886S.-Peterburg : Tipo-lit. M︠i︡esnika i Rimana, 1886.55 p. ; 26 cm. -
3Opyt kolichestvennago opred︠i︡elenī︠i︡a mikroorganizmov v kladbishchenskoĭ pochv︠i︡eОпыт количественнаго опредѣленія микроорганизмов в кладбищенской почвѣ /by Klementʹev, Vladimīr
Published 1887S.-Peterburg : Tip. N.A. Lebedeva, 1887.99, [2] p., [2] folded leaves of plates : map ; 23 cm.