[19] The  Shire of Mornington Peninsula  has libraries in  Mornington ,  Rosebud ,  Hastings  and  Somerville . [20] The  City of Stonnington  has libraries in  Malvern ,  Malvern East ,  Prahran  and  South Yarra . [21] Western suburbs The  City of Brimbank  has libraries in  Deer Park ,  Keilor ,  St