Study on mass conservation techniques for treatment of library and archives material / prepared by the Regional Centre of the IFLA Core Programme FAC [i.e. PAC], Deutsche Bücherei Leipzig, GDR ; edited by Wolfgang Wächter under the supervision of Helmuth [sic] Rötzsch.

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Due to essential system maintenance, online requesting will be unavailable from 9pm until midnight on Tuesday 21 April. You can still search the catalogue as usual. We apologise for any inconvenience.

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Helmut Rötzsch

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Study on mass conservation techniques for treatment of library and archives material / prepared by the Regional Centre of the IFLA Core Programme FAC [i.e. PAC], Deutsche Bücherei Leipzig, GDR ; edited by Wolfgang Wächter under the supervision of Helmuth [sic] Rötzsch.