TY - BOOK ID - 137921200 TI - State of the world 1987 : a Worldwatch Institute report on progress toward a sustainable society. AU - Starke, Linda. AU - Worldwatch Institute. PY - 1987 SN - 0393303896 PB - New York Norton DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:137921200 AB - ER -