TY  - GEN
TI  - Advances in the prevention of low birthweight : : an international symposium 
U1  - 616  
PY  - 1991///
CY  - Washington D.C : 
PB  - N.C.E.M.C.H 
KW  - Low birthweight
KW  - Prevention
N1  - Includes bibliography
ER  -