Signs

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

1 (1975)	?	1	?	?
1 (1976)	S	?	S	1
2 (1977)	S	S	S	2
3 (1977)	S	3	S	?
3 (1978)	?	?	?	1
4 (1978)	1	2	?	?
4 (1979)	?	?	S	3
5 (1979)	1	?	?	?
5 (1980)	?	S	2	S
6 (1980)	1	2	S	S
7 (1982)	S	S	1	S
8 (1983)	?	?	1	?
12 (1987)	?	?	?	1
19 (1994)	?	?	?	1
24 (1999)	?	?	?	1
25 (2000)	?	?	1	5
27 (2001)	1	?	?	?
27 (2002)	?	?	2	?
28 (2003)	?	?	?	1
29 (2004)	?	?	1	?
32 (2006)	1	?	?	?
32 (2007)	?	?	?	1
33 (2008)	?	?	?	1
34 (2008)	1	?	?	?
34 (2009)	?	?	1	?
35 (2010)	?	?	?	2
36 (2010)	1	?	?	?
36 (2011)	?	2	1	?
37 (2011)	1	?	?	?
37 (2012)	?	?	1	1
38 (2012)	1	?	?	?
46 (2021)	?	?	?	1
47 (2021)	2	?	?	?