The aunswere of the Lords the Estates Generall of the Vnited Prouinces of the Lowe-Countries, to the letter of the Archduke of Austria, heere-after inserted : together vvith the proposition done in the name of the sayde arch-duke to the forenamed states, by Otto Hartius, and Jeronimus Coomans, learned in the lawes : also, the extract of certaine letters, written out of the campe before Groning.