| Query | User |
|---|---|
| clean cities congress | entered by user 4183400 |
| denmark hydrogen | entered by user 9457294 |
| disadvantages of fuel cells | entered by user 9037986 |
| fuel cells | entered by user 2357449 |
| hoku energy hydrogen | entered by user 5727802 |
| houston alterantive renewable center | entered by user 11770041 |
| iceland hydrogen | entered by user 8725059 |
| pacific fuel cell corp | entered by user 805364 |
| rock band fuel | entered by user 2728243 |
| sadesh | entered by user 6482837 |
| samsoe | entered by user 2733464 |
| toyota and gm end joint fuel-cell research | entered by user 3253781 |
| toyota and gm end joint fuel-cell research | entered by user ditto |
| uav new engine technology | entered by user 6476355 |
| umicore michigan | entered by user 16637839 |