TY  - BOOK
AU  - Watson,John A.
TI  - Commercial roofing systems
SN  - 0835908577
PY  - 1984///
CY  - Reston, Va.
PB  - Reston Pub. Co.
KW  - Commercial buildings
KW  - Roofs
KW  - Roofing
N1  - Includes bibliographical references and index
ER  -