THIS IS A CAT 528 SKIDDER TRACTOR SERVICE MANUAL, THIS IS A BIG MANUAL, COVERS S/N 78W 97C 98C 51S, LOTS OF INFORMATION! Be sure to add me to your favorites list. This item is in the category "Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment Parts & Accessories\Heavy Equipment Manuals & Books". The seller is "theservicemanualguy" and is located in this country: US. This item can be shipped worldwide.