P. E. Schall GmbH, P.E. Schall GmbH is Germany's largest private promoter of technical trade fairs. But this is no reason for Paul Eberhard Schall to rest on his laurels, on the contrary: it's an incentive for further action.

P.N.Lebedev Physical institute of the Russian Academy of Sciences, Physical Institute of the Lebedev of the Russian Academy of Sciences (FIAN) is one of the largest and probably the oldest research center of Russia. The Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS) is one of the largest and is, apparently, the oldest scientific research centre of the country.