This Must Be Wrong, Though Tyler Cowan Cites It

Marginal revolution refers to this paper (it's not free, so I'm not getting it):

This paper investigates the institutional causes of China’s Great Famine. It presents two empirical findings: 1) in 1959, when the famine began, food production was almost three times more than population subsistence needs; and 2) regions with higher per capita food production that year suffered higher famine mortality rates, a surprising reversal of a typically negative correlation. A simple model based on historical institutional details shows that these patterns are consistent with the policy outcomes in a centrally planned economy in which the government is unable to easily collect and respond to new information in the presence of an aggregate shock to production.

I can't believe the first sentence: a country of some 500-600 million people had food sufficient for 1.5 billion? No way, no how. [Update: according to Wikipedia, food production in 59-60 was 70 percent of pre-famine levels.]