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The big bang theory for dummies
16 Sep

The big bang theory for dummies

The circle of fifths for dummies
20 May

The circle of fifths for dummies

The circumference of the earth
09 Aug

The circumference of the earth

The coefficients in a chemical equation represent the
26 Sep

The coefficients in a chemical equation represent the

The wrist bones are called
26 Dec

The wrist bones are called