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A comment on Immersive Linear Algebra – A free interactive online book. Parent comment

Re:Immersive Linear Algebra – A free interactive online book by immersivemath on Tuesday September 08, 2015 @11:14AM (#10186184)
This service is free of charge!
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Re:Immersive Linear Algebra – A free interactive online book by jimhefferon on Tuesday September 08, 2015 @02:21PM (#10187373)
Are you involved with the project?

If so, thank you. What is the license?

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