TY  - BOOK
AU  - 
AU  - Persico,Enrico,[from old catalog]
AU  - Long,Marjorie,[from old catalog]
TI  - The absolute differential calculus
AV  - QA433 .L4
PY  - 1929///
CY  - London and Glasgow
PB  - Blackie & son limited
KW  - Differential calculus
KW  - Relativity (Physics)
ER  -