Armstrong, Roswald Lester
Nationality: Undetermined, possibly 
(United Kingdom)
Identities and Authority Control
- Open Library: OL2439079A
- pdbooks.info ID: 39885
Roswald Lester Armstrong Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Callable bond values: showing the net returns from bonds or other redeemable securities, callable at a premium | 1926 | Author | |  |  | | | ||