00367nam a22001217a 4500008004100000040005500041080003200096245005500128260001800183300001000201650002100211653001300232230518b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aR 061.5:62(494) Escher Wyas  aEscher Wyss, 1805-1955: b150 years of development  aSwitzerland:   a246p.  aThermal machines  aResearch