TY  - BOOK
AU  - Gladstone, John & others
TI  - Mechanical estimating guidebook for building construction
U1  - 697 
PY  - 1987///
CY  - Berkley,P.A,New York,Tokyo etc
PB  - McGraw Hill Pub. 
KW  - Air conditioning--Estimates
N1  - ENG
ER  -