TY - GEN AU - Ayres ,Frank TI - Schaum's outline of theory and problems of differential equations in si metric units T2 - Schaum's outline series SN - 0070990069 U1 - 515.3 22 PY - 1972/// CY - Singapore PB - McGraw Hill KW - Differential equations KW - BUEsh KW - Reading book N1 - Includes index ER -