L'ami des hommes, ou Traité de la population
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A notable work of Victor de Riqueti, marquis de Mirabeau, this work is a crucial part of the history of French economic theory and was published in 1756 regarding questions of trade, population and agriculture.
"Questions interessantes sur la population, l'agriculture et le commerce, proposées aux académies & autres sociétés sçavantes des provinces." Translation: "Interesting questions on population, agriculture and trade, proposed in academies and other knowledgeable societies of the provinces."