The Departments of the Central Committee of the Communist Party of the Soviet Union were all specialised in their own field, for example, the International Department handled Soviet relations with non-ruling communist parties.
A–U is an abbreviation of All-Union, in this case All-Union Ministries. The All-Union ministries were ministries with no regional ministerial branches in the republics.
U–R is an abbreviation of Union Republic, in this case Union republican ministries. Union republican ministries were either All-Union ministries with republican branches or republican ministries without an All-Union affiliate.
Pres. is short for Presidium, in this case Presidium of the Council of Ministers. In the tables. Pres. denotes ministers or chairmen of state committees who held seats in the Presidium.
Responsible for handling intra-Secretariat and intra-Central Committee housekeeping, the handling of incoming communications, and security for classified documents
Political organs in the armed forces, and through them, the Ministry of Defence, however, the Administrative Organs Department was also responsible for the defence ministry.
Propaganda-agitation work conducted by party, state or other organisations, the political education of party cadres, the publishing of newspapers and journals and cultural work for trade unions.