TY  - BOOK
AU  - IOC
AU  - Schaaf, Thomas. ed.
TI  - UNESCO and ICSU International Scientific Programmes on Environment and Sustainable Development:Special Forum organized on 30 june 1999 on the occasion of the World Conference on Science: Science for the Twenty-First Century-A New Commitment  
PY  - 1999///,
CY  - Paris
PB  - UNESCO
UR  - https://unesdoc.unesco.org/ark:/48223/pf0000121153
ER  -