00343nam a2200097 a 450000500170000008200190001710000230003624501120005926000500017163000240022120251203091212.0  a363.70973bBER  aBerwick, Stephen H  aExtrapolating from the American experience in environmental impact assessments:bproblems and opportunities  aNew DelhibEnvironmental Services Groupc1982  anvironmental impact