H and Rose (W) were married on June 15, 1974. At the time of the marriage, H owned, as his separate property, a farming operation known as Cockrill Farms. There seems to be no dispute that the net worth increase of the farm, during the two years and ten-month marriage, after some credits, was $79,000. The trial court found that this increase was attributable primarily to the efforts of H and was, therefore, community property. H contends that the net worth increase was primarily due to the inherent nature of his separate property, the farm, and was, therefore, also his separate property. H appealed.