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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1965 3
1966 2
1967 3
1969 1
1970 1
1971 1
1972 1
1973 6
1974 53
1975 226
1976 302
1977 254
1978 224
1979 254
1980 262
1981 273
1982 277
1983 331
1984 345
1985 383
1986 357
1987 369
1988 356
1989 376
1990 402
1991 436
1992 297
1993 284
1994 275
1995 246
1996 339
1997 321
1998 294
1999 416
2000 427
2001 829
2002 886
2003 965
2004 1073
2005 1391
2006 1571
2007 1536
2008 1566
2009 1367
2010 1508
2011 1869
2012 1904
2013 1921
2014 2367
2015 2360
2016 2531
2017 2310
2018 2359
2019 1977
2020 150
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36,018 results
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Page 1
A validation procedure for air sampling-analysis systems.
Shotwell HP, Caporossi JC, McCollum RW, Mellor JF. Shotwell HP, et al. Am Ind Hyg Assoc J. 1979 Aug;40(8):737-42. doi: 10.1080/15298667991430235. Am Ind Hyg Assoc J. 1979. PMID: 495478
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