00587nam a2200157 4500 1/22945 031112s1997 lu a n001 0 eng 9282819663 24456 KET 333.79 LET Let's learn about energy : a practical handbook for teachers Brussels : European Commission, 1997 58 σ.: εικ.; 30 εκ. Power resources Former Soviet republics Handbooks, manuals, etc. Tacis Technical Dissemination Project. INST UNIPILB KET 20050609 KET 333.79 LET 00147284 00147284 LOAN 0 1