TY - BOOK AU - Sonntag,N.C. TI - Cumulative effects assessment: a context for further research and development SN - 0662156072 PY - 1987/// CY - Hull, Quebec PB - CEARC KW - Environmental impact analysis KW - Canada KW - Ecology KW - Research N1 - 'A background paper presented for the Canadian Environmental Assessment Research Council'; Issued also in French under title L'evaluation des impacts cumulatifs; p. 81 ER -