Pedzisa mutsara unotevera: Mienzaniso inokosha yokutanga ine mativi maviri inosanganisira mepu yokuyerera kweNapoleon's March paMoscow yakabudiswa naCharles Joseph Minard muna 1869; "coxcombs" yakashandiswa naFlorence Nightingale muna 1857 sechikamu chemushandirapamwe wekuvandudza mamiriro ehutsanana muuto reBritain; uye mepu yemadontho yakashandiswa naJohn Snow muna 1855 kuenzanisira kufamba kwaNapoleon paMoscow; uye "coxcombs" yakashandiswa naFlorence Nightingale muna 1857 sechikamu chemushandirapamwe wekuvandudza mamiriro ehutsanana muuto reBritain; uye mepu yemadontho yakashandiswa naJohn Snow muna 1855 kuenzanisira kufamba kwaNapoleon paMoscow.
Kupararira kwecholera muBroad Street.