Recumbent length (or standing height) and weight standards of 1253 infants and children living in Lomellina were studied by a cross-sectional approach. Metric data from birth to 7 years of age were smoothed by a least squares quadratic or cubic spline technique. Growth percentile curves for males and females are subdivided into two sections, the first for the 0-3 and the second for the 3-7 age groups.