- Vols. for <2004-> published by Chemical Week Associates. - Trade Publication - Vol. 144, no. 1/2 (Jan. 4/11, 1989) misnumbered as v. 145, no. 26. - Vol. 145, no. no. 1 (July 5, 1989) misnumbered as v. 144, no. 27. - Vol. 127. no. 18 and v. 131, no. 10 never published. - Vol. 158, no. 42 omitted in numbering. - Vol. 161, no. 46 not published. - Supplements accompany some issues. - Online version of print publication.
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