As Bill Bryson noted in his book 'At Home': ..." the primary clothing material of the Middle Ages was wool."
ດັ່ງທີ່ Bill Bryson ໄດ້ຍົກໃຫ້ເຫັນໃນປື້ມ 'At Home' ຂອງລາວ:" ...ອຸປະກອນເຄື່ອງນຸ່ງ ສໍາ ຄັນຂອງຍຸກກາງແມ່ນຂົນ."