The 39th Technical Sessions of the IPSL in conjunction with the 43rd AGM of the IPSL will be held on Saturday, 11th March 2023. The purpose of the Sessions is to enable members to present work done by them in the form of a research paper. Members who wish to read their papers are kindly requested to submit their manuscripts through the IPSL website, https://ipsl.lk/technical-sessions/ by December 15, 2022