TY  - GEN
T1  - The economics of invention and innovation :with a case study of the development of the hovercraft /
AU  - Johnson, P. S.,
CN  - HD45
ID  - 26496
KW  - Ground-effect machines.
KW  - Technological innovations.
KW  - Innovations.
KW  - Economic issues
SN  - 0855200782
TI  - The economics of invention and innovation :with a case study of the development of the hovercraft /
ER  -