TY  - BOOK
AU  - Herman  E. Hayward
TI  - Structure of economic plants
U1  - 581.4 
PY  - 1948///
CY  - NewYork
PB  - Macmillian Company
N1  - Herman  E. Hayward: Structure of economic plants.  NewYork.  Macmillian Company, 1948.--(581.4HAY)
ER  -