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	1.		Making sure and arithmetic, Grade 1 by Morton Robert Lee Gray Merle Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1949 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	2.		Making sure of arithmetic, Grade 2 : Text - workbook by Morton Robert Lee Gray Merle Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1949 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	3.		Making sure of arithmetic, Grade 2 by Morton Robert Lee Gray Merle Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1947 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	4.		Making sure of arithmetic, Grade 3 by Morton Robert Lee Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1946 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	5.		Making sure of arithmetic, Grade 4 by Morton Robert Lee. (et.al) Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1946 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	6.		Making sure of arithmetic, Grade 5 by Morton Robert Lee Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1946 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	7.		Making sure of arithmetic, Grade 6 by Morton Robert Lee. (et.al) Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1946 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	8.		Making sure of arithmetic, Grade 7 by Morton Robert Lee.(et.al) Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1946 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	9.		Making sure of arithmetic, Grade 8 by Morton Robert Lee. (et.al) Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1946 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)
	10.		Teaching arithmetic in the elementary school, 2 V by Morton Robert Lee Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1937 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.851, MOR. Place hold Save to lists Add to cart (remove)
	11.		Teaching arithmetic in the elementary school, 2 V by Morton Robert Lee Material type: Text; Format: print Language: English Publication details: New York, USA Silver Burdett Company 1937 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.851, MOR. Place hold Save to lists Add to cart (remove)
	12.		Helping children learn arithmetic by Morton Robert Lee Material type: Text; Format: print Language: English Publication details: New Jersey, USA Silver Burdett Company 1960 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 372.7, MOR. Place hold Save to lists Add to cart (remove)