TY  - BOOK
AU  - Simms, William
TI  - The achromatic telescope and its various mountings especially the equatorial, to which are added some hints on private observatories
AV  - QB88 S55
PY  - 1852///
CY  - London
PB  - Troughton and simms
KW  - Telescopios
N1  - Incluye catalogo: cataloque of instuments made by throughton and simms (16 p.)
ER  -