What type of details about hans holzer can be gathered from the following bio? Bio: hans holzer -lrb- 26 january 1920 -- 26 april 2009 -rrb- was an american paranormal researcher and author . he wrote well over 100 books on supernatural and occult subjects for the popular market as well as several plays , musicals , films , and documentaries , and hosted a television show , '' ghost hunter '' -lrb- not to be confused with ghost hunters , a separate show -rrb- .
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