51.   The study would involve trenching across the fault to observe other layers ruptured by past quakes, and dating long-buried plant materials using radioactive carbon.

52.   The wooden planks were stitched together with plant material, and they were quite large.

53.   There are several directories of available plant material, but this is the largest and most comprehensive.

54.   Those that overwinter in plant material do just fine in hard winters, he said.

55.   Thousands of pieces of plant material are fixed to thick cuts of foam that are secured to wooden armatures with drywall screws and massive washers.

56.   We avoid adding treated grass clippings or plant materials to our compost pile because degradability and toxicity varies considerably among chemicals.

57.   All you need to look for are suitable plant materials.

58.   Nevertheless, he said, he saw no plant material or bacterial containation of blood samples taken from the back gate three weeks after the killings.

59.   Sand contains no plant food materials.