Key to Fractions, Books 1-4 SetSteven Rassmussen, Steven Rasmussen · First published 1991Open the Tome
Key to Fractions, Books 1-4, Reproducible TestsSteven Rassmussen, David Rassmussen · First published 1990Open the Tome
Key to fractionsSteven Rasmussen, Steven Rassmussen, Soreck Rosekrans · First published 1980Open the Tome
