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"Die meisten klassischen Publikationsformen der Wissenschaft entstanden im 17. Jahrhundert: Sie gehen zurück auf Briefsammlungen, die wissenschaftliche Gesellschaften untereinander verschickten. Die Verteilungszyklen richteten sich nach der Frequenz des Postkutschenverkehrs, weshalb man die Briefe für den Versand zusammenband. Dieses Prozedere aufgrund von fast vierhundert Jahren alten Strukturen brachte schließlich die in Ausgaben bestimmter Journale organisierten Artikel hervor."

Building Public Health capacity using Internet-based e-learning.

Coastline Sediment Control is the biggest sedimentation controlling company in New South wales, Australia. We are also providing sediment control fencing and fence installation services at eco friendly prices.

Coastline Sediment Control offers the best windblown waste container in Australia. Waste enclosure is supplied in black weedmat 1380 material and is 3m x 3m, 3 sided with an opening 4m to 5m from entrance.

.. you can use to show the global effects of research paywalls - and to help get access to the research you need. Every time you hit a paywall blocking your research, click the button. Fill out a short form, add your experience to the map along with thousands of others.

search the ETH Knowledge Portal ..

search the ETH Knowledge Portal ..

Strive as we might to make sense of the world, some mysteries still confound us. Here are 13 of the most perplexing - cracking any one of them could yield profound truths

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