Koliko je ovo isplativo?
http://www.ecohome.net/news/la...post-pile-hot-tub-water-heater
https://www.youtube.com/watch?v=f8jN4hipBBI
mini oblik
https://www.youtube.com/watch?v=VloS0ud0i3c
brajovic sasa
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grijanje na slamu,proces truljenja,drvni otpad,vase misljenje |
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