The older MH CD-ROM registration number you entered for your MH31 Digital Edition UPGRADE is not valid. Please recheck the number you have and try re-entering it.
Empty Registration Code, Please Enter!
This is an upgrade digital product. To purchase and use this Machinery’s Handbook 31 Digital Edition Upgrade, you must have either:
A) an active subscription on this Industrial Press eBookStore site to either the Machinery’s Handbook (MH) 29th or 30th edition eBook
or
B) a prior CD-ROM, with a valid registration number, for a previous edition of the Machinery’s Handbook.
Our system shows that you do not have an active MH29 or MH30 eBook subscription.
If you have a previous MH CD-ROM, please enter your registration number [below] in order to purchase this Upgrade version:
for the full (non-upgrade) version of the Machinery’s Handbook 31 Digital Edition.
The previous edition MH CD-ROM registration number is not validating as entered. You have tried to enter it too many times.
Please write to industrialpress@ipublishcentral.com with the registration number and details of the problem you are having.
Esta obra presenta información clara y precisa sobre las principales áreas del desarrollo físico, cognitivo, social y afectivo de las niñas y los niños, el…
