▁or ▁d ril led ▁for ▁natural ▁gas . ▁The ▁park ▁was ▁named ▁Pr eston ▁Park ▁in ▁his ▁honor . ▁ ▁Bibli ography ▁The ▁following ▁articles ▁author ed ▁by ▁Frank ▁W . ▁Pr eston ▁appeared ▁in ▁E col ogy ▁a ▁scientific ▁journal ▁published ▁by ▁the ▁E colog ical ▁Society ▁of ▁America . ▁" The ▁Common ness , ▁and ▁R ar ity , ▁of ▁Species " ▁ 1 9 4 8 ▁" Time ▁and ▁Space ▁and ▁the ▁Vari ation ▁of ▁Species " ▁ 1 9 6 0 ▁" The ▁Can on ical ▁Distribution ▁of ▁Common ness ▁and ▁R ar ity " ▁ 1 9 6 2 ▁" D iversity ▁and ▁St ability ▁in ▁the ▁Bi ological ▁World " ▁ 1 9 6 9 ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁Category : American ▁environmental ists ▁Category : English ▁em igr ants ▁to ▁the ▁United ▁States ▁Category : Pe ople ▁from ▁Butler , ▁Pennsylvania ▁Category : 1 8 9 6 ▁birth s ▁Category : 1 9 8 9 ▁death s ▁Category : Al umn i ▁of ▁the ▁University ▁of ▁London <0x0A> </s> ▁Lad is lav ▁Š to v č ik ▁( born ▁ 1 3 ▁March ▁ 1 9 5 0 ) ▁is ▁a ▁former ▁Slov ak ▁football ▁def ender ▁who ▁played ▁profession ally ▁only ▁for ▁V SS ▁Ko š ice . ▁He ▁made ▁ 1 0 9 ▁appearances ▁at ▁the ▁Czech oslov ak ▁First ▁League . ▁ ▁Š to v č ík ▁played ▁seven ▁matches ▁for ▁the ▁Czech oslov ak ia ▁under - 2 3 ▁team