The Macmillan science series

The Macmillan science series

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pumped out of the heart via arteries.) a€c How many chambers does the human heart have? (Four.) Follow-Up: Have children locate the pulse in their wrist. If a stethoscope is available, let them check their heartbeat and compare it with the pulseanbsp;...

Title:The Macmillan science series
Author:John Darrell Barnard, Celia Stendler, Benjamin Spock
Publisher: - 1966


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