Washington, D.C. : Office of Electronic Information Dissemination Services, Supt. of Docs., U.S. G.P.O. : For sale by Supt. of Docs., U.S. G.P.O., 1992-
Vol. for Apr. 1992 compiled by: Special Interest Group on CD-ROM Applications and Technology (SIGCAT) and U.S. Geological Survey Library; Apr. 1993- by: Special Interest Group on CD-Rom Applications and Technology (SIGCAT), GPO Office of Electronic Information Dissemination Services, and U.S. Geological Survey Library