00302nam a22001217a 4500020001800000082001600018100001700034245006300051250001100114260002700125300001000152654001800162  a9781588906632  a617.48bNAN  aNanda , Anil  aPrinciples of Posterior Fossa Surgery: Surgical Management  a1st ed  aNew YorkbThiemec2011  a252p.  aNeuro surgery