Range:
Subjects: Twentieth century; United States; Poetry
Subjects: Education; Learning; English language
Subjects: Manganese; Copper
Subjects: Jordan; Valleys
Subjects: Mathematical analysis; Mathematics; Algebra
Subjects: Copper
Subjects: Education; Jordan; Learning; Secondary education; English language
Subjects: Education; Jordan; Learning; Textbooks; Evaluation
Subjects: Organic compounds
Subjects: Seeds
Subjects: Chemical processes; Chemical reactors; Chemical reactions
Subjects: Electrical properties
Subjects: Carbon dioxide; Copper
Subjects: Corn; Fertilizers
Subjects: Chemical processes; Chemical reactions
Subjects: Data processing
Subjects: Fruits; Fungicides; Jordan; Roots; Plants
Subjects: Hyperbolic differential equations