一般注記"Prepared in conjunction with Abt Associates, Inc. under U.S. Environmental Protection Agency contract no. 68-D9-0169"--2nd prelim. p
Shipping list no.: 91-472-P
"April 1, 1991."
"21P-1003"--Cover
Physical description for original version: [4], 23, 4 p. ; 28 cm
書誌注記Includes bibliographical references
原資料等に関する注記原資料の出版事項: Washington, DC : U.S. Environmental Protection Agency, [Office of] Policy, Planning and Evaluation, [1991]
SUPTDOC番号: EP 1.2: C 76/16
GPO管理番号: 431-I-1