00695nam a2200217Ia 4500 0000011103 20251012174515.0 990101s1974 xx 000 0 eng d 0444107231 0720460557 9780444107237 9780720460551 HB3730 338.544 Towards a plan of actions for mankind : problems and perspectives ed. by M. Marois. Institut de la Vie, Paris Amsterdam [u.a.] North Holland Publ. Co. [u.a.] 1974 558 graph. Darst Economic development Congresses Environmental policy Congresses Human ecology Congresses 4991 4991