Mental hygiene

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 (1917)	?	?	1	?	?
32 (1948)	?	?	1	?	1
33 (1949)	?	?	?	1	2
34 (1950)	?	1	?	1	?
36 (1952)	?	1	?	?	?
38 (1954)	?	?	?	1	?
39 (1955)	?	?	?	1	?
40 (1956)	?	1	?	?	?
41 (1957)	?	?	?	1	?
42 (1958)	?	1	?	?	?
43 (1959)	3	?	?	1	?
44 (1960)	3	1	1	1	1
46 (1962)	4	?	?	1	1
47 (1963)	?	?	?	?	1
48 (1964)	1	?	?	?	?
49 (1965)	1	?	?	?	1
50 (1966)	?	?	2	?	?
51 (1967)	?	2	?	1	2
52 (1968)	?	2	2	2	?
53 (1969)	?	?	?	4	3
54 (1970)	?	?	2	2	1
55 (1971)	?	2	5	2	?
56 (1972)	?	1	1	?	?