For the first time immune age
chemical prospecting for petroleum
Geophysical Prospecting for Petroleum
Surveying in geophysical prospecting for petroleum
(1) for the need of public interest
1-order ordinary differential matrix equation for the state vector
a bull market for the US dollar
a dedicated transformer for the motor starting directly on line
a guide-dog for the blind
A Kind of New Excited Circuit for the Generators
a ladle for the whole process
a method for the calculation of magnetic field
a program for the cost of a casting
a thousand-li journey begins with the first step
a very important day for the referendum vote
Academy of Sciences for the Third World
Acceptance level for the house price
accessory for the perdition of the state