Preclassification System for the Wyandotte-ASTM Punched Cards, Indexing Spectral Absorption Data

$29.00 plus tax (Refund Policy)

Buy Article:


Once that the number of Wyandotte-ASTM punched cards indexing spectral absorption data exceeded several thousand, it was necessary to use a more rapid method in order to obtain a reasonable speed of retrieval. A preclassification of the total deck is described which needs no other special equipment than a card sorting machine. With this method 2,836 cards must be handled in the most unfavorable case instead of the 42,000 representing the authors' collection.

Document Type: Research Article


Affiliations: Analytical Department, Labofina S.A., Centre de Recherches du Groupe Petrofina, Brussels 12, Belgium

Publication date: May 1, 1965

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more