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Auth 0511 David Spector and Sylvia Halkin part 2 duration 29 minutes 7 seconds Auth 0511 David Spector and Sylvia Halkin part 2 Auth 0511 David Spector and Sylvia Halkin part 2	Auth 0511 David Spector and Sylvia Halkin part 2 education and upbringing +16 More From Ryan Wark 22 plays 0
Auth 0510 David Spector and Sylvia Halkin pt 1 duration 28 minutes 56 seconds Auth 0510 David Spector and Sylvia Halkin pt 1 Auth 0510 David Spector and Sylvia Halkin pt 1	Auth 0510 David Spector and Sylvia Halkin pt 1 ornithology +14 More From Ryan Wark 38 plays 0

Auth 0511 David Spector and Sylvia Halkin part 2