Gray, L. E.
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 142455
L. E. Gray Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Hip and valley design: details, formulae and graphics, roofs, hoppers and pipe lines | 1912 | Author | |  | |  | |    
| |