1 Subjects: “...indices of N productivity...”

2 Subjects: “...hydrogen production...”

3 Subjects: “... and farming::TVK Agronomy and crop production...”

4 Subjects: “...fuel production management...”

5 Subjects: “... and farming::TVK Agronomy and crop production...”

6 Subjects: “...Business & management: study & revision guides / bicssc...”

7 Subjects: “...Agriculture, agribusiness and food production industries...”

8 Subjects: “...waste management...”

9 Subjects: “...Economics, finance, business & management / bicssc...”

10 Subjects: “...waste management...”

11 Subjects: “...management...”

12 “... food production. To achieve this last aim, we asked authors for research that could potentially...”