B.J. Knapp

No biography available.

Works (7)

Cover of Francium to Polonium (F to P) (Elements)

Francium to Polonium (F to P) (Elements)

Cover of Actinium to Fluorine (A to F) (Elements)

Actinium to Fluorine (A to F) (Elements)

Cover of Potassium to Zirconium (P to Z) (Elements)

Potassium to Zirconium (P to Z) (Elements)

Cover of Life cycles

Cover of Heat and Energy (Visual Science Encyclopedia)

Heat and Energy (Visual Science Encyclopedia)

Cover of Keeping healthy

Keeping healthy

Cover of Habitats