TY  - BOOK
AU  - Kratz, Alonzo P.
AU  - Konzo, Seichi, coaut.Engdahl, Richard B., coaut.
TI  - Temperature drop in ducts for forced-air heating systems / -by Alonso P. Kratz, Seichi Konzo, Richard B. Engdahl
CY  - Urbana, Illinois : University of Illinois, Engineering Experiment Station
ER  -