=Hart & Feldman's= Plane and Solid Geometry 1.25 Key to the same 1.00 Plane Geometry .80 Solid Geometry .80 =Hornbrook's= Concrete Geometry .75 =Hull's= Elements of Geometry 1.25 =Loomis's= (E.) Plane and Spherical Trigonometry. With Tables 1.50 Tables of Logarithms 1.00 =Lyman's= Plane and Solid Geometry 1.25 Key to the same 1.00 Plane Geometry .75 Solid Geometry .75 =Milne's= Plane and Solid Geometry 1.25 Key to the same 1.25 Plane Geometry .75 Solid Geometry .75 =Phillips (A. W.) & Fisher's (I.)= Elements of Geometry 1.75 Key to the same 1.50 Plane Geometry .80 Geometry of Space or Solid Geometry 1.25 Elements of Geometry. Abridged 1.25 Logarithms of Numbers .30 =Phillips (A. W.) & Strong's= Elements of Plane and Spherical Trigonometry. With Tables 1.40 The same. Without Tables .90 Key to the same 1.25 Logarithmic and Trigonometric Tables 1.00 =Robbins's= Plane and Solid Geometry 1.25 Key to the same 1.00 Plane Geometry .75 Solid Geometry .75 Plane Trigonometry .60 =Robinson's= New Geometry and Trigonometry 1.60 Key to the same 1.60 Geometry .90 Trigonometry .90