Varlo, C. (1785). A new system of husbandry, from many years experience, with tables shewing the expence and profit of each crop: ... also many chosen receipts in physic and surgery, for the human species, and others for the cure of all sorts of cattle, to which are annexed a few hints humbly offered for the perusal of the legislators of America, shewing how to put a stop to runaway servants. Philadelphia: Printed for the author.

Varlo, Charles. A New System of Husbandry, From Many Years Experience, With Tables Shewing the Expence and Profit of Each Crop: ... Also Many Chosen Receipts in Physic and Surgery, for the Human Species, and Others for the Cure of All Sorts of Cattle, to Which Are Annexed a Few Hints Humbly Offered for the Perusal of the Legislators of America, Shewing How to Put a Stop to Runaway Servants. Philadelphia: Printed for the author, 1785.

Varlo, Charles. A New System of Husbandry, From Many Years Experience, With Tables Shewing the Expence and Profit of Each Crop: ... Also Many Chosen Receipts in Physic and Surgery, for the Human Species, and Others for the Cure of All Sorts of Cattle, to Which Are Annexed a Few Hints Humbly Offered for the Perusal of the Legislators of America, Shewing How to Put a Stop to Runaway Servants. Philadelphia: Printed for the author, 1785.