1
Published 1964
...NCRP report;...
2
Published 1991
...NCRP report;...
3
4
Published 1979
...NCRP report; no. 65...
5
6
Published 2000
...NCRP report; no. 134...
7
8
Published 2000
...NCRP report; no. 132...
9
10
Published 1988
...NCRP report; no. 99...
11
Published 1999
...NCRP report; no. 130...
12
Published 1989
...NCRP report; no. 103...
13
14
Published 2001
...NCRP report; no. 135...
15
16
Published 1989
...NCRP report; no. 106...
17
18
Published 1991
...NCRP report; no. 108...
19
20
Published 1991
...NCRP report; no. 110...