Andragogy: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Anticoagulants. Types. Properties and Effects: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Pulmonary Embolism: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Brexit: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Internal Management Processes in an Organization: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Geopolitical Processes in the Balkans: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Geriatrics: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Civic Education: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Didactic Games: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

European Union: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

European Programmes and Projects: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Healthcare and Prevention of Oncological Diseases: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Healthcare and Public Health Reforms: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Coronavirus (COVID-19). Etiology, Pathogenesis and Treatment Approaches: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Coronavirus Infection: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Methodology of the Educational Process through E-Learning: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Multiplex Television Platforms: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Pedagogical Communication: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

The Role of the Resource Teacher in Supporting the Educational Process: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Social Policy and Social Responsibility: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Theory of Education: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

TurkStream: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.

Physics and Mechanics: Bibliographic Reference / Compiled by Genadi Bogdanov. – Vratsa: Regional Library “Hristo Botev” – Reference, Bibliographic and Information Department, 2020.