"High-speed sampler - Apstein (1906)"@en .
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"SDN:L22::NETT0002" .
"Construction is a cylindrical tube with ~2 cm diameter mouth opening expanding to 4 cm diameter in the main body with a filtering surface at the rear. Overall length ~20 cm [Wiebe and Benfield 2003 Plate 13 A]."@en .
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