Hayward, F.H. Professionalism and originality : with an appendix of suggestions bearing on professional, administrative, and educational topics / by F.H. Hayward; F.H. Hayward .— : George Allen & Unwin Ltd. — 272 с. — Lang: eng .— URL: https://rucont.ru/efd/115786 (дата обращения: 15.11.2025)