TY  - ART
TI  - Negretti & Zambra's encyclopædic illustrated and descriptive reference catalogue of optical, mathematical, physical, photographic and standard meteorological instruments, manufactured and sold by them — Illustration, Page 170
PY  - 1887
UR  - https://www.biodiversitylibrary.org/page/16784008
ID  - page-16784008
ER  -