TY  - BOOK
AU  - Duncan, George A.
AU  - Walker, John N.
TI  - Poy-tube heating-ventilation systems and equipment
PY  - 0000///(197?)
CY  - Lexington, Kentucky
PB  - University of Kentucky
KW  - Invernaderos
KW  - Refrigeración
N1  - Fotocopia
ER  -