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The United States Naval Observatory, Washington
ARP23A16_205

The United States Naval Observatory, Washington

Experiment to measure the velocity of sound in water.
ARP18A08_464

Experiment to measure the velocity of sound in wat...

Experiment to measure the velocity of sound in water.
ARP18A08_466

Experiment to measure the velocity of sound in wat...

Experiment to ascertain the effects of electricity on water
ARP07112_009783P

Experiment to ascertain the effects of electricity...