Voices

本片是一部美国片，上映于1974-01-01，由导演，由William Conrad主演。

剧情简介：Documents various environmental actions, such as the efforts of Clevelanders who took part in planning a new jetport in Lake Erie, the work of farmers in Missouri to protect their land against government dam builders, and the battle of a gas station operator in Pittsburgh who took on an industrial giant that was polluting the air. Narrated by William Conrad

地区：美国

演员：William Conrad