- Publisher: Алтера?AlteraPublisher Record # 76523
- Webpages: altera-bg.com, Facebook
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Note: A Bulgarian publisher.
Publication series data
Years When Books Were Published
| ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | 2009 |
| ------ | ------ | 2012 | ------ | ------ | 2015 | ------ | ------ | ------ | 2019 |
| ------ | 2021 | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ |
Publication Breakdown by Author: