Seminar on new directions in science & technology in
Proceedings of the Seminar on new directions in science & technology in Sri Lank - Sri LanColombo Natural resources, energy and science authority of Sri Lanka 1993 - 87 p.
_
500 / SEM
Proceedings of the Seminar on new directions in science & technology in Sri Lank - Sri LanColombo Natural resources, energy and science authority of Sri Lanka 1993 - 87 p.
_
500 / SEM