TY - JOUR TI - Pooling Cross Section and Time Series Data in the Estimation of a Dynamic Model: The Demand for Natural Gas AU - Pietro Balestra AU - Marc Nerlove JO - Econometrica PY - 1966 VL - 34 IS - 3 DO - 10.2307/1909771 UR - https://doi.org/10.2307/1909771 ER -