NOTEBOOK “μ” (“MU”)

( Bulletin de l’institut international de statistique ),
XIX, 1 (p. 382)

Prime Motors ( h.p. )
(other than electric)

Sources of data:

A) general industrial censuses

B) industries censuses

C) “administrative statistics”.

I take only steam power (but without locomotives) and total [i.e. + water-power, etc., but without electric].

Extreme diversity and incompleteness of the data!!