1. 01. English Non Fiction Betcha! / by Murphy, Stuart J., Publication: New York, NY : HarperCollins Publishers, 1997 . 33 p. : , "Level 3, estimating." 21 x 26 cm. Date:1997 Availability: Copies available: (1), Actions:
2. 01. English Non Fiction Greater estimations / by Goldstone, Bruce. Publication: New York, N.Y. : Henry Holt and Company, 2008 . 31 p. : 29 cm. Date:2008 Availability: Copies available: (1), Actions: