DOI: https://doi.org/10.4038/jnsfsr.v20i2.8072 | Journal eISSN: 2362-0161
Language: English
Page range: 181 - 186
Published on: Dec 26, 1992
Published by: National Science Foundation of Sri Lanka
In partnership with: Paradigm Publishing Services
© 1992 GF MITCHELL, published by National Science Foundation of Sri Lanka
This work is licensed under the Creative Commons License.