NS 1.11/3:996/3
DATA BRIEF... VOL. 1996, NO. 3... NATIONAL SCIENCE FOUNDATION... JUNE 13, 19
0834-G
970375M
970321
NS 1.11/3:996/4
DATA BRIEF... VOL 1996, NO. 4... NATIONAL SCIENCE FOUNDATION... JUNE 19, 199
NS 1.11/3:996/5
DATA BRIEF... VOL. 1996, NO. 5... NATIONAL SCIENCE FOUNDATION... JULY 24, 19
NS 1.11/3:996/6
DATA BRIEF... VOL. 1996, NO. 6... NATIONAL SCIENCE FOUNDATION... JULY 24, 19
NS 1.11/3:996/12
DATA BRIEF... VOL. 1996, NO. 12... NATIONAL SCIENCE FOUNDATION... NOVEMBER 2