Title:-On Related Caustics of Reflection, and the EvoluteĀ of the Lemniscata, as Derived from a Caustic of the HyperbolaAuthor:-Childe, George FrederickFormat:-Paperback / softbackPublisher:-Franklin ClassicsPublisher Date:-11/10/2018Pages:-30Genre:-History, General, , ISBN13:-9780342485550Condition:- BRAND NEW