sec04: Pattis Zoja — found her RU book «Аборты. Утрата и обновление в поисках идентичности» (Т8/ЦГИ 2017, ISBN 978-5-9500699-9-4, per GBS SPb); added GBS SPb + retail sources to AGENTS.md

AGENTS.md

@@ -87,6 +87,18 @@ sections/0N-<name>/  # one .md per BOOK (chapter-level list items are merged int
 - Lists every edition the shop carries (title variants!). Product pages lack full
   metadata in HTML (JS-rendered) — use RSL/livelib for publisher/year/ISBN.
 
+### 8. GNB SPb (State Public Library of St. Petersburg) catalog — SECONDARY bibliographic source
+- URL: `https://www.gbs.spb.ru/ru/search/detail/?id=<hash>` (rich GOST records: title,
+  responsible parties incl. translators, publisher w/ full legal names, year, pages, ISBN,
+  notes like «Др. кн. авт.»)
+- **Complements RSL:** RSL (RGB) misses some small-press editions (e.g. Pattis-Zhoya
+  «Аборты…» Т8/ЦГИ 2017 is in GBS but NOT in RSL). Query via SearXNG `site:gbs.spb.ru <author>`.
+
+### 9. chitai-gorod.ru / ozon / labirint — trade retail pages
+- chitai-gorod author pages list RU works (some noise); product pages give publisher/year/ISBN.
+- labirint.ru/books/<id> server-rendered w/ full specs (publisher, year, pages, ISBN, translator).
+- Ozon product pages: blocked from curl (redirect loop) — fetch_content also fails; use browser.
+
 ### Not usable / low value
 - libgen biblioservice worldcat/googlebooks/isbndb/udc (broken on this mirror)
 - imaton.com (МААП educational publisher, not translations)