Feigenbaum’s first law

Fick’s first law

Ficks first law of diffusion

first law of dynamics

first law of kepler

first law of motion

first law of newton

first law of photochemistry

First law of resources　economic

first law of system engineering

first law of the mean

first law of thermodynamics

first law of thermo-dynamics

first law thermodynamics analysis

geographic first law

newton first law

Newton’s first law

Newton’s first law of motion

the first law analysis