000
00249nam a22000977a 4500
999
_c
58821
_d
58821
040
_a
cfpl
245
_a
Cobblestone -- 2019 -- February
_b
The power of invention.
650
_2
Inventions.
650
_a
Invention protection.
_9
70812
942
_2
ddc
_c
J PER