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1
Main Authors:
Corporate Authors:
Group Author: ;
Published: Pub. House of the Bulgarian Academy of Sciences,
Publication Dates: 1984.
Call Number: O753/K61/
Corporate Authors:
Group Author: ;
Published: Pub. House of the Bulgarian Academy of Sciences,
Publication Dates: 1984.
Call Number: O753/K61/
2
Group Author:
Published: World Scientific Pub. Co.,
Publication Dates: c1988.
Call Number: O753-64/A881/
;
Published: World Scientific Pub. Co.,
Publication Dates: c1988.
Call Number: O753-64/A881/