TY - GEN AU - Butler, Norman, CN - QB88 ET - Second edition. ID - 801061 KW - Telescopes LK - https://univsouthin.idm.oclc.org/login?url=http://link.springer.com/10.1007/978-3-319-46789-4 SN - 9783319467894 SN - 3319467891 T1 - Building and using binoscopes / TI - Building and using binoscopes / UR - https://univsouthin.idm.oclc.org/login?url=http://link.springer.com/10.1007/978-3-319-46789-4 ER -