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Jeff Kooistra
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Have him in circles
642 people
K. Joseph Steele (Josh)'s profile photo
Paul Levinson's profile photo
Hallee Bridgeman's profile photo
Adam Millard's profile photo
Jennifer Frost's profile photo
Heather Tucker's profile photo
Mari-Anna Frangén Stålnacke's profile photo
Rob Valentine's profile photo
shashwat sinha's profile photo
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Writer. Freelance physicist.
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