Search Results       Your search for [subject]Title : Trade secrets returned 1 record.           The Library handbook of genuine trade secrets and instructions for cleaning, repairing and restoring old manuscripts, engraving and books, as practised by the experts. by Haslam, W.; [London: Foyle], 1923. Subject: Books--Conservation and restoration; Engravings--Conservation and restoration; Manuscripts--Conservation and restoration; Title : Trade secrets.          Add to Book Cart Relevance: 14.18%