“PHOSPHATASE ACTIVITY OF FOREST CHESTNUT AND CARBONATE SOILS, NONINFECTED AND INFECTED BY BACILLUS THURINGIENSIS BERLINER BACTERIA”, Proc. YSU B: Chem. Biol. Sci., vol. 36, no. 3 (199), pp. 113–117, Sep. 2002, doi: 10.46991/PYSUB.2002.36.3.113.