This paper employs an original dataset for 146 US metropolitan areas to test some propositions that characterize two different models of organizing firms and industries: the managerial firm, epitomized by the work of Alfred Chandler, and the entrepreneurial system, recently highlighted by many authors. We discuss the reasons why, compared to the entrepreneurial systems, the Chandlerian world en...

Altogether 18 species of the families Opetiidae and Platypezidae are reported from Romania, based on newly studied material and previously published records. The following three species are recorded from Romania for the first time: Agathomyiavernalis Shatalkin, 1981, Callomyiasaibhira Chandler, 1976, and Lindneromyiahungarica Chandler, 2001. The presented differential diagnosis and a detailed r...