Guderian Robert Air pollution: Phyto toxicity of acidic gases and its significance in air pollution Guderian Robert - Berlin Springer-Verlag 1977 - viii, 127p. cm. - Ecological studies; 22 . Tr from the German by C Jeffrey Brandt Standard No.: 55323 Source: Textual Subjects--Topical Terms: Plant in di cators Dewey Class. No.: L:558, L7