International Co-ordinating Council of the Programme on Man and the Biosphere (MAB) : final report, first session /
- Paris : Unesco, 1971.
- 65 p. : ill. ; 28 cm.
- MAB report series. .
346 346
Environmental protection -- Congresses.
Human ecology -- Congresses.
Environmental protection.
301.3 / U3i
346 346
Environmental protection -- Congresses.
Human ecology -- Congresses.
Environmental protection.
301.3 / U3i