16.09.2010
Gulf oil spill: BP works to finish relief wells and seal gusher for good Relief Well: The long-term method of stopping the leak is the [...]
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15.09.2010
The Learning Machines Graphic timeline of learning technologies used in the classroom. Learning technologies include: Horn-book Ferule Magic Lantern School Slate Chalkboard Pencils Stereoscope Filmstrip [...]
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