Historical introduction -- The piezoelectric effect in ceramics -- Measurement techniques -- The perovskite structure -- Barium titanate -- Properties of PbTiO3, PbZrO3, PbSnO3 and PbHfO3 plain and modified -- Solid solutions of Pb(Ti, Zr, Sn, Hf)O3 -- Perovskite niobates and tantalates and other ferroelectric and antiferroelectric perovskites -- Non-perovskite oxide piezoelectrics and ferroelectrics -- Interpretation of some experimental results -- Manufacture of piezoelectric ceramics -- Applications of piezoelectric ceramics.