TY - GEN AU - Castle, Frank TI - Elementary practical mathematics U1 - 510,CAS PY - 1949/// CY - London New York . PB - Macmillan and Co., Limited N1 - Measurement Units of Length (Page-1) Units of Area and Volume (Page-7) Time and its Measurement Angular Measurement (Page-22) Arithmetic Signs of Operation (Page-39) Contracted Multiplication (Page-59) Algebra Addition Subtraction (Page-76) Approximations Measures and Multiples (Page-96) Simple Equations (Page-110) Labour Saving Methods (Page-178) Arithmetical Progression (Page-189) Orthographic Projection Projections true Lengths and Inclinations (Page-200) Menstruation Plane Figures and Right Angled Triangles (Page-228) Linear Motion (Page-286) Use of Squared Paper (Page-327) Evaluation of Algebra and Trigonometrical Formulae (Page-354), Algebra and Differentiation (Page-377) ER -