code: def _parse_alt_url(html_chunk):
      
      url_list = html_chunk.find("a", fn=has_param("href"))
      url_list = map(lambda x: x.params["href"], url_list)
      url_list = filter(lambda x: not x.startswith("autori/"), url_list)
  
      if not url_list:
          return None
  
      return normalize_url(BASE_URL, url_list[0])
docs: Parse URL from alternative location if not found where it should be.
  
      Args:
          html_chunk (obj): HTMLElement containing slice of the page with details.
  
      Returns:
          str: Book's URL.