Phosphate rock and methods proposed for its utilization as a fertilizer . o 1 ?-- 5 §3 13 i 3 r- C 1 c CO c S PHOSPHATE ROCK: UTILIZATION AS FERTILIZER. 25 © a 15 ftgtuoR Ph ft H t* 03 • .. w Pi .2 © £a S3 ?a ?g « g a g tsS »rt 2-d djl »? Ph Ah. 8-SS v-i-h OhO 03 O O -d © d S-d Ph Ph ft drd o §6 ?a* w if If ~£o litis 8s .2 ^ ^*0 o3„-it3 dS^.w- fi - CO © .• £^d •go S3aw 1111 Sill o $ S| -81 S3 5a MB Ph Ph W2 • *2 ?812 © » d N3 o Hi « 2 AS *d © 5f £ d I . © .3 S-d s -* -co ft •Swa. 2fj « •d ^ 03 © 03 t? a $SS>! :So I a*! 55-g illIII •s-s Id? d oj. 03 ;dM ft o*2—-eS © ®m73 o o3 a Si do*d
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Keywords: ., bookcentury1900, bookdecade1910, bookidphosphateroc, bookyear1915
