Scientific publications often include citations that have abbreviated journal titles. For example:
Kenyon L, Harrison NA, Ashburner GR, Boa ER, Richardson PA.1998. Detection of a pigeon pea witches’-broom-related phytoplasma in trees of Gliricidia sepium affected by little-leaf disease in Central America. Plant Pathol. 47:671–80.
In this example, Plant Pathol. stands for the journal Plant Pathology. To identify the title of a journal that you are looking for, consult the following guide to Scientific Journal Abbreviations (created by Kevin Lindstrom, Univ. of British Columbia):