American demographics

Articles in SafetyLit
Y-Axis = Volume :: X-Axis = Issue
?=unknown status :: X=no issue published :: nn=articles from issue :: A=relevant article(s) IDed to add
S=searched, nothing relevant :: O=issue published but not yet searched :: C=combination issue

	3	6	8	9	10

18 (1996)	1	?	?	?	?
19 (1997)	?	?	1	?	?
20 (1998)	?	1	?	?	?
21 (1999)	?	?	?	1	?
24 (2002)	?	?	?	?	1