4. Statistical masterfile [electronic resource] : ASI, SRI & IIS on CD-ROM Format: Journal Language: English Published: c1990-1998
6. American foreign policy index : a guide to foreign policy and foreign relations publications of the U.S. Government Format: Journal Language: English Published: 1993-1995
7. CIS US congressional committee hearings index Format: Book Language: English Published: c1981-c1985