Complex sentence: It is asserted that he had lessons in gardening from André Le Nôtre: he was responsible for the engravings in Dezallier d'Argenville's seminal work on the principles of garden design established by Le Nôtre, "La théorie et la pratique du jardinage", 1709.
Split into simpler sentences: It is asserted that he had lessons in gardening from André Le Nôtre. Indeed, he was responsible for the engravings in Dezallier d'Argenville's seminal work on the principles of garden design established by Le Nôtre, "La théorie et la pratique du jardinage", 1709.