I want to know the answer to the following question:
Which man's works were mostly the cause of the ''narrow approach''?
All the background I'm provided with is that "Eager to promote alternatives to what he regarded as the narrow approach of the school of economic thought that then dominated the English-speaking academic world (centred at the University of Cambridge and deriving largely from the work of Alfred Marshall), Robbins invited Hayek to join the faculty at LSE, which he did in 1931.". Is that enough to answer the question?