%0 Generic %A Maps.com. %C [S.l.] : %D 1999. %E Maps.com(CR) %I Maps.com, %T Hypsometric Map Africa Nigeria %U http://SK8ES4MC2L.search.serialssolutions.com/?sid=sersol&SS_jc=TC_001947888&title=Hypsometric%20Map%20Africa%20Nigeria