Analysis of information sources in references of the Wikipedia article "อุปกรณ์ลอยน้ำส่วนบุคคล" in Thai language version.
It consists of two simple pieces of cork, placed in such a manner on the human body, as to assist it in swimming either on the back or belly at will...
It consists of two simple pieces of cork, placed in such a manner on the human body, as to assist it in swimming either on the back or belly at will...
