PDFY - What does PDFY stand for? The Free Dictionary
References in periodicals archive
PPSI performed cost effectiveness and benefit-to-cost analyses using data from the long-term study of the ISFP and PDFY
programs mentioned previously (see Guyll et al.
program has a five-session design, only one of which requires the child's attendance.
program consists of five competency-training sessions for parents, with young adolescents attending one of those sessions together with their parents.