ISSA Explanatory Supplement
Changes
15 Sept 1997: The only changes have been corrections of minor typographical errors and updates of references (for papers in press at the time of publication of the printed version and to manuals updated since publication).
The ISSA noise and count maps are now available from the ADF, and a note to this effect has been added to the discussions of these maps in sections I.C, III.C, and chapter V.