The Popular Mechanics set of 7 magazines from 2019 includes issues from various months like March, April, June, September, October, November, and December. These magazines cover a range of topics related to technology and science, making them a valuable resource for anyone interested in staying up-to-date with the latest developments in these fields. Each issue is written in English and features in-depth articles, insights, and information on a variety of subjects that are sure to captivate readers with a passion for technology and science.