期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：1980
卷号：XXIII Part B1
页码：134-143
出版社：Copernicus Publications
摘要：This Specification for vertical airintended for general use worldwide.be achieved in practice rather thanachieved in exceptional conditionscost.photography, taken on contract, isIt aims to define standards which canideal standards which can only beor by using special procedures at higherThe Specification is designed to satisfy the needs of most clients for blackand white photography and include~ therefore, some optional and alternativeclauses, printed in italics, which may be selected as required. Alsoclients may wish to make their own additions and deletions to suit theirparticular requirements
