Prof. Fang Ditang (September 1899 - April 1968) of South China Institute of Technology (currently <a href="https://en.wikipedia.org/wiki/South_China_University_of_Technology" class="extiw" title="en:South China University of Technology">South China University of Technology</a>)
Unknown author<span style="display: none;">Unknown author</span>
before 1968 <div style="display: none;">date QS:P,+1968-00-00T00:00:00Z/7,P1326,+1968-00-00T00:00:00Z/9</div>
History Museum of South China University of Technology