Vanishing Peoples: Lacandones
Episode: 13x01 | Airdate: Nov 6, 1972
Episodes
The Polar Bear
Episode: 13x02 | Airdate: Jan 8, 1973
Grouse Country
Episode: 13x03 | Airdate: Jan 15, 1973
Ice Lovers
Episode: 13x04 | Airdate: Jan 29, 1973
Think Before You Eat
Episode: 13x05 | Airdate: Mar 5, 1973
Stockholm '72: Politics for Survival
Episode: 13x06 | Airdate: Mar 12, 1973
Cities for People
Episode: 13x07 | Airdate: Mar 19, 1973
Migration: Animals in Cycle
Episode: 13x08 | Airdate: Mar 26, 1973
Old Enough
Episode: 13x09 | Airdate: Apr 2, 1973
Cities for People
Episode: 13x10 | Airdate: Apr 2, 1973
Recycling
Episode: 13x11 | Airdate: Apr 9, 1973
Acupuncture
Episode: 13x12 | Airdate: Apr 16, 1973
Vanishing Peoples: Yanoniami
Episode: 13x14 | Airdate: May 7, 1973