00620nam a2200205 a 450000100060000000300080000600500170001400800410003103500190007204000350009104100080012608200260013410000180016024500320017826000450021030000310025550000660028660000470035265000150039969227BD-RjUL20211209081849.0170410s1948    enka          000 0beng d  a(BD-RjUL)69438  dBD-RjULaBD-RjULbengcBD-RjUL  aeng  223a530.092bYOL 19481 aYoung, A. P. 10aLord Kelvin /cA. P. Young.  aLondon :blongmans, Green and com,c1948  av, 41 p. :bill. ;c23 cm.  aAt head of cover : International electrotechnical commission.  aKelvin, William Thomson, Baron,d1824-1907  aPhysicists