TY - BOOK ID - 135503148 TI - Conservation and the gospel of efficiency : the progressive conservation moment, 1890-1920 PY - 2020 SN - 1839745428 PB - [Place of publication not identified] : Barakaldo, DB - UniCat KW - Natural resources UR - https://www.unicat.be/uniCat?func=search&query=sysid:135503148 AB - ER -