U.S. R&D data (Cattell directories)

由 Png Paak Liang Ivan
出版 2018

Location of U.S. Corporate Headquarters, 1988-2006

由 Png Paak Liang Ivan
出版 2019

Location of U.S. Manufacturing, 1987-2014: A New Dataset

由 Xiong Xi, Png Paak Liang Ivan
出版 2019

Cost of Cash: Evidence from Cashiers

由 Png, Paak Liang Ivan, Tan, Charmaine HY
出版 2021

China Meteorological Publications 1872-1951

由 Chen Yeh-Ning, Chu Junhong, Png Paak Liang Ivan
出版 2017

Sunk Cost Fallacy in Driving the World’s Costliest Cars

由 HO TECK HUA, Png Paak Liang Ivan, SADAT REZA
出版 2020

NUS Republican China Weather Database

由 Png Paak Liang Ivan, Chen Yeh-ning, Chu Junhong, Feng Yikang
出版 2019