一般注記Distributed to depository libraries in microfiche
Shipping list no.: 93-0665-M
"November 1991."
"EPA-450/2-91-008."
Physical description for original version: ii, 27 p.
書誌注記Includes bibliographical references (p. 25-27)
原資料等に関する注記原資料の出版事項: Research Triangle Park, NC : Office of Air Quality Planning and Standards, Office of Air and Radiation, U.S. Environmental Protection Agency, [1991]
SUPTDOC番号: EP 4.8: AI 7/9
GPO管理番号: 0483-E-02 (MF)