TY  - GEN
AU  - PAYNE,A M
TI  - Hypotheses and certainties
SN  - 0041-6959
PY  - 2000///0701
KW  - Biomedical Research
KW  - Humans
KW  - Poliomyelitis
KW  - prevention & control
N1  - Publication Type: Journal Article
ER  -