Operations research

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	Suppl 1

4 (1956)	1	?	?	?	?	?	?
6 (1958)	?	1	?	?	?	1	?
7 (1959)	1	?	?	1	?	1	?
8 (1960)	1	?	2	2	?	1	?
9 (1961)	?	?	?	?	1	?	?
10 (1962)	?	?	?	?	2	?	?
12 (1964)	?	?	?	1	?	1	?
39 (1991)	?	?	?	?	?	1	?
40 (1992)	?	?	?	?	?	?	1
50 (2002)	1	?	?	?	?	?	?
57 (2009)	?	?	1	?	?	?	?
58 (2010)	?	?	?	1	?	?	?
61 (2013)	?	?	?	?	?	1	?
63 (2015)	?	1	?	?	?	?	?