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Richter 's products are exported to nearly one hundred countries ( EU , USA , Japan , Russia , etc ) . The NPP is supporting research and development of a system consisting of an extracorporeal coil and a family of implantable microstimulators and microtransducers ( Loeb et . Recent research has been investigating the possibility of recreating now extinct agro-forestry systems as a tool for development of humid tropical areas ( Gliessman et al. 1981 ) . Early competence in the parenting role is one factor that has been positively associated with the development of maternal affectional behaviors ( Walker , Crain , and Thompson , 1986 ) and positive attachment to the baby .