CALDERA, R2009-05-282009-05-281959-11-01CALDERA R. Prolonged pregnancy, its effects on mother and child and principles of management. The Ceylon Medical Journal. 1959 Nov; 5(): 37-42http://imsear.searo.who.int/handle/123456789/47784The Ceylon Medical Journal.engPregnancy --complicationsProlonged pregnancy, its effects on mother and child and principles of management.Journal Article