TY  - BOOK
AU  - Van Brummelen,Glen
TI  - Trigonometry: a very short introduction 
T2  - Very short introductions
SN  - 0198814313
AV  - QA531 V37
U1  - 516.24 23
PY  - 2020///
CY  - Oxford
PB  - Oxford University Press
KW  - Trigonometría
ER  -