1. Book 3 explains deficiency symptoms of the following nutrients: Boron and Molybdeunum plus salinity, two or more deficiency symptoms, grow-box gardening, and Index.
  2. 1971-01-01 It is the purpose of this booklet to suggest some ways of studying plants that may involve students more fully, especially in the design and development of elementary research suitable for school laboratories. Educational Products Division, LaMotte Chemical Products, Chestertown, MD 74 pages,...