Conservation, science and society.
Conservation, science and society.
- París : UNESCO, 1984.
- 272 p. vol 1; 612 vol. 2 il., map.
- natural resourcesresearch; XXI, Vol. 1 y 2 .
9231022547
339.5 (06) (100)=20 CON No. 21 Vol. 1
9231022547
339.5 (06) (100)=20 CON No. 21 Vol. 1