Although this review is concerned mainly with intensity problems, it will not be out of place to mention some important identification aids which have recently become available:
The third edition of ‘The Identifications of Molecular Spectra’ by Pearse and Gaydon has been published, as has ‘A Spectrophotometric Atlas of CH from 3000–5000Å’. The Bumblebee Report on OH has now appeared in the open literature as have two very useful compilations of band head wavelengths by Wallace. An identificational Atlas of Molecular Spectra is in preparation.