All PDFs on this site should be viewable within the page and also be available to be downloaded. However this might not work on all possible platforms.
Reasons to download
The PDFs have mostly been created using software the allows you to view the Table of Contents or thumbnails of the pages. This will not be usable when it is displayed within a page. Viewing a downloaded copy might be faster and will use less bandwidth which might matter to some. It will also continue to be accessible even if not connected to the internet.
Reasons not to download
If you download a PDF then it will never be updated. You have to download it again in order to access the latest version. Viewing within a page means you will always see the latest available document.
@ Copyright helvella 2016 through last updated date. All rights reserved. No part of this publication may be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording or by means of any information storage or retrieval system without prior permission in writing from the author; or ii) used or reproduced in any way for the training, development or operation of artificial intelligence (Al) technologies, including generative Al technologies. The rights holders expressly reserve this publication from the text and data mining exception as per Article 4(3) of the Digital Single Market Directive (EU) 2019/190.