Maths on the back of an envelope : clever ways to (roughly) calculate anything
Eastaway, Rob
Maths on the back of an envelope : clever ways to (roughly) calculate anything - London Harper Collins Publishers 2019 - vi, 200 p.
9780008324582 9780008324582
Arithmetic
Mathematics
Popular works
512 EAS
Maths on the back of an envelope : clever ways to (roughly) calculate anything - London Harper Collins Publishers 2019 - vi, 200 p.
9780008324582 9780008324582
Arithmetic
Mathematics
Popular works
512 EAS