TY  - BOOK
AU  - Nielsen, Harry A.,
TI  - Methods of natural science; an introduction
T2  - Prentice-hall fundamentals of logic series
AV  - Q175 N44
PY  - 1967///
CY  - Englewood cliffs
PB  - Prentice Hall
KW  - Ciencia
KW  - Metodología
ER  -