source: [word=","] [□=□]
destination: [word=","] [word=□]
spec: Because of the variation in the fracture pattern of this bedrock formation , extensive test drilling is often necessary in order to locate and develop suitable high-yielding potential wells for towns or industries . Key features : linear file model , scatter-gather read and write calls ( list of strided segments ) , asynch versions of all calls , extensive hint system . There has been ongoing , extensive research into the material properties and preservation of daguerreotypes at the Materials Research Laboratory of The Pennsylvania State University since 1979 . Sixty years ago over a million dwellings in America were sprayed every year with DDT to save lives . Jackson 's Island is good enough for me ; I know that island pretty well , and nobody ever comes there . It 's important to look at this not as a magic bullet or magic solution that 's going to address all needs and fix all problems . The Park is rich in small lakes and ponds , extensive sandy areas and rich alluvial meadows . They do not understand our larger aims .