00443 a2200145 4500 9559367897 577 RAT 17971 27828 රත්නපා, ඊ.ඇම්. අපේ පරිසරය හා ලෝකයේ අනාගතය? දිවුලපිටිය සරස්වතී 2002 2002 167p. 18cm. GENERAL NATURE OF LIFE L 45875 45875 0 0 0 0 LEN MAIN MAIN LEN 2009-06-15 0 577RAT 29176 2017-09-04 00:00:00 0.00 2016-10-31 L 0 0 0 0 LEN MAIN MAIN LEN 2009-06-15 0 577RAT 29174 2017-09-19 00:00:00 0.00 2016-10-31 L 0 0 0 0 LEN MAIN MAIN LEN 2009-06-15 0 577RAT 29175 2017-09-04 00:00:00 0.00 2016-10-31 L