"Interactive Learning, Inc. is the leading developer of science tutorial chemistry software, biology software, and physics software for high school and college students."

Excalibur Combination Packages

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BioTutor Excalibur and PhysicsTutor Excalibur

Save $10.00 when you buy both packages!

$69.90

ChemTutor Excalibur and BioTutor Excalibur

Save $10.00 when you buy both packages!

$69.90

ChemTutor Excalibur and PhysicTutor Excalibur

Save $10.00 when you buy both packages!

$69.90

Complete Excalibur Series

Save $15.00 when you buy all three Excalibur Editions!

$104.85

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