00431nam a2200133Ia 4500008004100000040001700041082002500058100001200083110007000095245003400165260002700199300001400226650005700240190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta616.904bN277C  aGuru, G  aNational Council of Educational Research and Training (New Delhi) 0aCommunicable diseasescG Guru  aNew DelhibNCERTc1988  axi, 127p.  aCommunicable diseases; Infection; Becterial diseases