00257nam a2200109Ia 4500082002200000100001600022245004600038260004300084300001000127500000500137700000500142  a361.942bAv955.VW  aAves, G. M.  aVoluntary worker in the social servicesb  aLondonbGeorge Allen & Unwin Ltdc1969  a224p.  a  a