Then the method of estimating future supplies depended very much on the availability
of different types of source data. In some cases we were able to work purely from inde-
pendent projections made of yields and the scale of production acreagess, tree numbers,
livestock numbers, etc.), while in others we were inclined more to picture local supply
itself, as the first assessments have given due weight to what fragmentary data were
available on the factors influencing supply.