| Frequency | Quarterly, July-Sept. 1990- |
| Special numbering | Issues for July-Sept. 1990-Oct.-Dec. 1990 have frequency incorrectly stated as bimonthly on P. [1] of cover; correct frequency, quarterly, given on P. [2] of cover. |
| Special numbering | Jan.-Mar. and Apr.-June 1992 issued in combined form. |
| Other forms | Distributed to depository libraries on microfiche. |
| Issuing body | Vols. for -issued by: U.S. Dept. of Energy, Office of Fossil Energy; by: Office of Communications, Assistant Secretary for Fossil Energy, U.S. Dept. of Energy. |
| Source of description | Description based on: Mar.-Apr. 1988; title from caption. |
| Source of description | Latest issue consulted: Jan.-June 1992. |
| LCCN | sn 91023301 |
| GPO item number | 429-H-3 |
| Govt. docs number |
E 1.84/3: E 1.84:0235 P-5 |
