TY  - BOOK
AU  - Calvert, N. G.,
AU  - Cummins, F.,
TI  - Windpower principles: Their application on the small scale 
SN  - 085264258x
AV  - TK1541 C34
PY  - 1979///
CY  - London ; high wycombe
PB  - C. Griffin
KW  - Presión del viento
ER  -