TY - BOOK AU - Guderian Robert TI - Air pollution: Phyto toxicity of acidic gases and its significance in air pollution T2 - Ecological studies; 22 U1 - L:558, L7 PY - 1977/// CY - Berlin PB - Springer-Verlag KW - Plant in di cators N1 - Tr from the German by C Jeffrey Brandt ER -