phosphatizationphosphidephosphoellenbergeritephosphoferritephosphofibritephosphogartrellitephosphophyllitephosphorescence or luminescence or luminescencephosphoritephosphorizationphosphosiderite or metastrengite or metastrengitephosphovanadylitephosphowalpurgitephosphuranylitephotic zonephoto geology or photogeology or photogeologyphoto indexphotoautotrophic or holophytic or holophyticphotoclinometerphotoclinometryphotoelasticityphotogeologic guidephotogeologic mapphotogrammetryphotographphotograph centerphotograph large scale or photograph or photographphotograph medium scale or photograph or photographphotograph small scale or photograph or photographphotographyphotohydrologyphotolineament factor or pf or pf or photolineamentphotoluminescence or luminescence or luminescencephotomapphotometerphotometryphotomicrographphotomicrographyphotomosaicphotoperiodphotorealismphotoreceptorphotorelief map or photorelief or photoreliefphototaxisphototriangulationphototrophicphragmoconephragmosporephreaticphreatic cycle