TY  - BOOK
AU  - Waggman, William H.
TI  - Phosphoric acid, phosphates and phosphatic fertilizers
U1  - 631.85 
PY  - 1960/// (c.1952)
CY  - New York
PB  - Reinhold
KW  - Acido fosfórico
KW  - Fertilizantes y abonos
KW  - Fosfatos
ER  -