published on: 2014-10-11 21:59:58
sitxlys: sitxlys: *visit my tumblr *
underground
underground
Lemniscate of Bernoulli
Lemniscate of Bernoulli
underground
published on: 2014-10-11 21:59:58
sitxlys: sitxlys: *visit my tumblr *
underground
underground
Lemniscate of Bernoulli
Lemniscate of Bernoulli
underground