An explanation of how the endocrine system sends out hormones to keep the body chemically in balance.
Marshmedia, PO Box 8082, Shawnee Mission, KS 66208, Phone: (816)523-1059, Toll-free: 800-821-3303, Fax: (816)333-7421, Email: firstname.lastname@example.org, URL: http://www.marshmedia.com
Available on VHS
Running time 45 minutes.
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