They admit that they do not have basic data. that they make only spot checks and random samples to accumulate information. and then they extrapolate data from that. They admitted that their own statistics could have wide swings of 20 or 30 percent either way. and even then they are not satisfied. The figures that the Senator from Massachusetts used are the best we have. but we could be off a good deal. The basic point is that this legislation involves only the large corporate farms. such as CocaCola. which was discussed at our recent hearings. and. only a modest proportion of the migrant labor force. perhaps 220.000 or 230.000 at the very most.