Presence

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

	1	2	3	4	5	6

5 (1996)	?	?	?	1	?	?
6 (1997)	?	?	?	1	?	?
8 (1999)	?	?	?	?	1	?
10 (2001)	?	?	?	1	?	?
11 (2002)	?	?	?	1	?	1
13 (2004)	?	1	?	?	?	?
15 (2006)	?	?	1	?	?	?
17 (2008)	1	?	1	?	?	?
20 (2011)	1	1	?	?	?	?