
A simple feeder for small birds can be done literally in minutes, using a tin can and a stick of wood or a suitable diameter of the branch.
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After the Second world war, the automotive industry of many European countries were in deep crisis. The post-war devastation, unemployment, inflation — all of this contributed to the...
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This hang glider in appearance very simple. Outwardly, it resembles a paper dove. But behind the apparent simplicity hides a precise calculation. To build the necessary dry...