TY  - BOOK
AU  - Helton,Joseph E.
TI  - Simplified estimating for builders and engineers
SN  - 013810144
AV  - TH435  .H44 1985
PY  - 1985///
CY  - Englewood Cliffs, New Jersey
PB  - Prentice-Hall
KW  - Building
KW  - Estimates
ER  -