Clark, John R.

Guiding arithmetic learning by: Clark, John R.; Eads, Laura K. (書目-語言資料,印刷品)

Plane geometry = Fundamental constructions,prsof, Triangles, Parallelograms by: Clark, John R.; Smith, Rolland R. (書目-語言資料,印刷品)

Growth in arithmetic by: Clark, John R.; Junge, Charlotte W.; Moser, Harold E. (書目-語言資料,印刷品)

Growth in arithmetic by: Clark, John R.; Junge, Charlotte W.; Moser, Harold E. (書目-語言資料,印刷品)

Teacher's edition of growth in arithmetic by: Clark, John R. (書目-語言資料,印刷品)