Sight-saving review

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	7

19 (1949)	?	?	?	?	1	?
21 (1951)	?	?	?	1	?	?
22 (1952)	?	1	?	2	1	?
35 (1965)	2	?	?	?	?	?
36 (1966)	?	?	?	1	?	?
37 (1967)	?	?	1	1	2	?
38 (1968)	?	1	?	1	3	?
39 (1969)	?	?	?	1	2	?
40 (1970)	?	?	2	1	?	?
41 (1971)	?	?	?	1	?	4
43 (1973)	?	?	2	1	?	?
44 (1975)	?	?	?	?	1	?
45 (1975)	?	?	1	?	?	?
47 (1977)	?	?	1	?	?	?
48 (1978)	?	?	?	?	1	?
48 (1979)	?	?	?	?	1	?
49 (1979)	?	1	?	?	?	?
49 (1980)	?	?	?	?	1	?