Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: The Twins Platoon: An Epic Story of Young Marines at War in Vietnam
Product description: Sauro's modest study of 150 men from Minnesota who enlisted in 1967 adds respectably to the literature of the Vietnam War. After the thoroughly grim ordeal of basic training, the young midwesterners finished advanced training just in time to arrive in Vietnam at the end of the year. Many served at Khe Sanh, where one was killed in action. Others drove amphibious tractors in the defense of Danang during the Tet Offensive, marched up and down, survived painful wounds, and, in one case, married a nurse. Their tours over, they came home, many of them to encounter the more virulent kinds of antiwar sentiment, and one to commit suicide as a result of post-traumatic stress disorder, which was not then recognized per se. Based on extensive interviews with a cross section of the surviving veterans, the book makes rather grim reading. But then, it's about young Americans in a rather grim war. Roland Green Copyright American Library Association. All rights reserved
Product brand: Christy W. Sauro Jr.
Target attributes: Page Count
Answer: attribute: page count
value: None
source: None