TY  - BOOK
AU  - Samuel Pierpont Langley and Charles Matthews Manly
TI  - Langley Memoir on Mechanical Flight, Parts I and II
KW  - Technology
UR  - https://new.zodml.org/sites/default/files/2023-07/langley_memoir_on_mechanical_flight_parts_i_and_ii_by_s._p._samuel_pierpont_langley_and_charles_m._charles_matthews_manly_tag_aeronautics_flight.epub
ER  -