Author

Pirjo Kristiina Virtanen

6 titles available
Cover of Snow trouble by Pirjo Kristiina Virtanen

Snow trouble
Cover of Megan's tree by Pirjo Kristiina Virtanen

Megan's tree

Physics World Millennium Edition
Cover of The Canadian Mathematics Competition by Pirjo Kristiina Virtanen

The Canadian Mathematics Competition
Cover of Isador A. Inchworm's book of math meanings by Pirjo Kristiina Virtanen

Isador A. Inchworm's book of math meanings
Cover of Curves and angles by Pirjo Kristiina Virtanen

Curves and angles

About Pirjo Kristiina Virtanen

Free ebooks by Pirjo Kristiina Virtanen available for download.