Covers the suitability of polyvinyl acetate (PVA) adhesives for use in library bookbinding with respect to their long-term stability. Contents: Introduction; Some characteristics of PVA adhesives; Some aging characteristics of PVA adhesives; Stability tests for PVA adhesives; Samples tested; The hot melts; The commercial emulsions; The specially formulated emulsions; Decomposition products, freezing-resistance, adjustment of viscosity, estimated longevity; Summary; Bibliography; Two appendixes and Colophone. See (6)-B3 -- -53. -- AATA