“…7 The reference is to Bragdon and Marlin (1972), Spicer (1978), Levy and Shatto (1980), Maddox and Siegfried (1980), Crafton et al (1981), Fry et al (1982), Reilly and Hoffer (1983), Shane and Spicer (1983), Stevens (1984), Jarrell and Peltzman (1985), Newgren et al (1985), Marcus and Goodman (1986), Pruitt and Peterson (1986), Wokutch and Spencer (1987), Hoffer et al (1988), Bromiley and Marcus (1989), Morris et al (1990), Davidson and Worrell (1992), Porter and Van Der Linde (1995), McLaughlin (1996), Nehrt (1996), Galaskiewicz (1997), Judge and Douglas (1998), Klassen and Whybark (1999), Dowell et al (2000), Gompers et al (2003), Brown and Caylor (2006).…”