Problems, exercises, etc Electric circuits -- 1 English language -- 1 Fluid mechanics -- 1 Machine-tools -- 1 Machining -- 1 Metal-working machinery -- 1 more ... Readers -- 1 Science 1 Science -- 1 Signal theory (Telecommunication) -- 1 Study and teaching (Secondary) -- 1 Technical English 1 Textbooks for foreign speakers 1 Thermodynamics -- 1 Thought and thinking -- 1 less ...