AU  - Melnick JL, Burkhardt M, Taber LH, Erckman PN
TI  - DEveloping gap in immunity to poliomyelitis in an urban area
PT  - JOUR
DP  - 1969
TA  - JAMA
pages = {1181-1185},
VI  - 209
IP  - 8
AID  - 10.1001/jama.1969.03160210013003 [doi]
4100  - http://dx.doi.org/10.1001/jama.1969.03160210013003
SO  - JAMA August 25, 1969 209(8):1181