540,806 PAVLOV VLADIMIR SPIRIDONOV, BEGOV ALEKSAND"R KONSTANTINOV Siraptomi i sindromi v oto-rino-laringologi jata. Sofija 1983 Medicina i Fizkultura 8° s. 247, nlb. 1, rez., sum.
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PAVLOV VLADIMIR SPIRIDONOV, BEGOV ALEKSAND"R KONSTANTINOV
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PAVLOV VLADIMIR SPIRIDONOV, BEGOV ALEKSAND"R KONSTANTINOV