CAN/CGSB 72.14-M89
CAN/CGSB 72.14-M89
Unitized 35 mm Microfilm Carriers (Aperture Cards)
standard published 06/30/2000 by Canadian General Standards Board
standard published 06/30/2000 by Canadian General Standards Board
This standard applies to the microcopying of all documents prepared by drawing offices, such as technical drawings, architect's plans, specifications, vocabularies, and parts lists. It deals with the requirements for the microcopying of such data onto single frames of 35 mm microfilm mounted individually in cards, bearing in mind their subsequent use for the interchange of information by reproduction, enlargement and viewing.