TY  - BOOK
AU  - Levi-Civita, Tullio,
AU  - Persico, Enrico,
AU  - Long, Marjorie,
TI  - The absolute differential calculus: (calculus of tensors) 
AV  - QA433 .L4
U1  - 517 
PY  - 1929///
CY  - London
PB  - Blackie & Son
KW  - Differential calculus
KW  - Calculus of tensors
KW  - Relativity (Physics)
N1  - "References": p. ix-x
ER  -