00725nam a2200229 a 450000100060000000300080000600500170001400800410003103500190007204000270009104100080011808200250012610000280015124500540017926000400023330000350027349000470030850400370035565000200039265000360041285600470044868497BD-RjUL20211209081759.0170403s1935    enk           001 0 eng d  a(BD-RjUL)68707  aDLCcMBUdBD-RjULbeng  aeng  223a530.12bPEQ 19351 aPenney, William George.14aThe quantum theory of valency /cby W. G. Penney.  aLondon:bMethuen & co. ltd.c1935 .  avii, 95 p. :bill. ;c17.5 cm.0 aMethuen's monographs on chemical subjects.  a"References": p. 93-94. & Index. 0aQuantum theory. 0aValence (Theoretical chemistry)  3Methuen's monographs on chemical subjects.