LLaws of Needs DevelopmentLaws of Needs Developmentde Petrov, VladimirEdiciones (1)Laws of Needs Development (2019)Independently Published · inglés · ISBN 9781696430180Más obras de Petrov, VladimirNNeobkhodimata istina za t︠s︡arskata restitut︠s︡ii︠a︡Neobkhodimata istina za t︠s︡arskata restitut︠s︡ii︠a︡AAesthetics and innovationAesthetics and innovationTRIZ. Theory of Inventive Problem Solving
NNeobkhodimata istina za t︠s︡arskata restitut︠s︡ii︠a︡Neobkhodimata istina za t︠s︡arskata restitut︠s︡ii︠a︡
IIzpolzuvaneto na reka Dunav za prevoz na tovari za i ot SredIzpolzuvaneto na reka Dunav za prevoz na tovari za i ot Sredna i Zapadna Evropa1985