The book "Poisonous Plants for Livestock" by Harold Cecil Long is an important reference for those involved in livestock production. The book describes in detail poisonous plants that can become dangerous for livestock, provides information on the symptoms of poisoning and measures to be taken in case of animal poisoning. The author systematically examines various types of poisonous plants, their toxic properties and effects on animal health. This book is a reliable source of information for farmers, veterinarians and anyone interested in animal husbandry and animal health.