TY  - BOOK
AU  - Tolba,Mostafa Kamal
TI  - The state of the world environment, 1933: the 1983 report of the executive director of the United Nations Environment Programme Dr. Mostafa Kamal Tolba
PY  - 1983///]
CY  - [S.l.
PB  - UNEP
N1  - Catalogación preliminar
ER  -