ECG Certification Official Problem Collection & Guide Revised 3rd Edition This is a set with the Perfect Manual. Immediate purchase is OK. Please only purchase if you understand that these are used items. ECG Certification Problem Collection ▷▶ There are some checks and circles in pencil, so I will erase them as cleanly as possible when mailing, but some marks may remain. Other than that, the book is in good condition. Perfect Manual ▷▶ There are lines drawn with a highlighter in a few places. The exterior of the book shows signs of use, but the inside is clean. #ECG Certification #ECG Textbook